{"items":[{"id":"NVI-00011890","kind":"vulnerability","title":"Microsoft Security Advisory CVE-2026-70194 - .NET and Visual Studio Security Feature Bypass Vulnerability","revision":4,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-fqpq-cx42-9jmm","CVE-2026-70194"],"plain_summary":"GitHub lists this reviewed advisory for Microsoft.NETCore.App.Runtime.linux-arm, Microsoft.NETCore.App.Runtime.linux-arm64, Microsoft.NETCore.App.Runtime.linux-musl-arm, Microsoft.NETCore.App.Runtime.linux-musl-arm64, Microsoft.NETCore.App.Runtime.linux-musl-x64. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-1aa9bccad62fc1b90fc5b9f0cd58e733"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-10-19T16:15:40.000Z","value":"6.5 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-527dc42e57b2b10f908464f1ae9c07d1"},{"kind":"CVSS","as_of":"2026-10-22T22:18:35.283Z","value":"6.5 MEDIUM (3.1)","meaning":"secure@microsoft.com severity; no combined Null risk score.","source_id":"sr-02d85c0ce810421a41f5529a5947e3e2"},{"kind":"EPSS","as_of":"2026-11-02T12:00:30.000Z","value":"0.486%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.41863. Missing scores are unknown.","source_id":"sr-1aa9bccad62fc1b90fc5b9f0cd58e733"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-527dc42e57b2b10f908464f1ae9c07d1","url":"https://github.com/advisories/GHSA-fqpq-cx42-9jmm","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-fqpq-cx42-9jmm","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T23:14:14.588Z"},{"id":"sr-02d85c0ce810421a41f5529a5947e3e2","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-70194","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-70194","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-04T09:58:41.978Z"},{"id":"sr-1aa9bccad62fc1b90fc5b9f0cd58e733","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-70194","publisher":"FIRST EPSS","observed_at":"2026-11-02T20:15:58.861Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-527dc42e57b2b10f908464f1ae9c07d1"],"technology":"Microsoft.NETCore.App.Runtime.linux-arm","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in System.Net.Security. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\n.NET 11 post-handshake TLS client authentication can fail to verify the client certificate, allowing mutual-authentication requirements to be bypassed.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/464\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** Moderate\n- **Score:** 6.5\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`\n\n- **Weakness:** CWE-295 (Improper Certificate Validation)\n## Affected Platforms\n\n- **Platforms:** Linux, macOS\n- **Architectures:** All\n\n## Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | ---------------\nMicrosoft.NETCore.App.Runtime.linux-arm | >= 11.0.0-preview.1, <= 1","public_affected_ranges":[">= 11.0.0-preview.1, <= 11.0.0-rc.1"]},{"certainty":"source_listed","source_ids":["sr-527dc42e57b2b10f908464f1ae9c07d1"],"technology":"Microsoft.NETCore.App.Runtime.linux-arm64","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in System.Net.Security. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\n.NET 11 post-handshake TLS client authentication can fail to verify the client certificate, allowing mutual-authentication requirements to be bypassed.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/464\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** Moderate\n- **Score:** 6.5\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`\n\n- **Weakness:** CWE-295 (Improper Certificate Validation)\n## Affected Platforms\n\n- **Platforms:** Linux, macOS\n- **Architectures:** All\n\n## Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | ---------------\nMicrosoft.NETCore.App.Runtime.linux-arm | >= 11.0.0-preview.1, <= 1","public_affected_ranges":[">= 11.0.0-preview.1, <= 11.0.0-rc.1"]},{"certainty":"source_listed","source_ids":["sr-527dc42e57b2b10f908464f1ae9c07d1"],"technology":"Microsoft.NETCore.App.Runtime.linux-musl-arm","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in System.Net.Security. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\n.NET 11 post-handshake TLS client authentication can fail to verify the client certificate, allowing mutual-authentication requirements to be bypassed.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/464\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** Moderate\n- **Score:** 6.5\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`\n\n- **Weakness:** CWE-295 (Improper Certificate Validation)\n## Affected Platforms\n\n- **Platforms:** Linux, macOS\n- **Architectures:** All\n\n## Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | ---------------\nMicrosoft.NETCore.App.Runtime.linux-arm | >= 11.0.0-preview.1, <= 1","public_affected_ranges":[">= 11.0.0-preview.1, <= 11.0.0-rc.1"]},{"certainty":"source_listed","source_ids":["sr-527dc42e57b2b10f908464f1ae9c07d1"],"technology":"Microsoft.NETCore.App.Runtime.linux-musl-arm64","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in System.Net.Security. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\n.NET 11 post-handshake TLS client authentication can fail to verify the client certificate, allowing mutual-authentication requirements to be bypassed.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/464\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** Moderate\n- **Score:** 6.5\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`\n\n- **Weakness:** CWE-295 (Improper Certificate Validation)\n## Affected Platforms\n\n- **Platforms:** Linux, macOS\n- **Architectures:** All\n\n## Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | ---------------\nMicrosoft.NETCore.App.Runtime.linux-arm | >= 11.0.0-preview.1, <= 1","public_affected_ranges":[">= 11.0.0-preview.1, <= 11.0.0-rc.1"]},{"certainty":"source_listed","source_ids":["sr-527dc42e57b2b10f908464f1ae9c07d1"],"technology":"Microsoft.NETCore.App.Runtime.linux-musl-x64","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in System.Net.Security. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\n.NET 11 post-handshake TLS client authentication can fail to verify the client certificate, allowing mutual-authentication requirements to be bypassed.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/464\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** Moderate\n- **Score:** 6.5\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`\n\n- **Weakness:** CWE-295 (Improper Certificate Validation)\n## Affected Platforms\n\n- **Platforms:** Linux, macOS\n- **Architectures:** All\n\n## Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | ---------------\nMicrosoft.NETCore.App.Runtime.linux-arm | >= 11.0.0-preview.1, <= 1","public_affected_ranges":[">= 11.0.0-preview.1, <= 11.0.0-rc.1"]},{"certainty":"source_listed","source_ids":["sr-527dc42e57b2b10f908464f1ae9c07d1"],"technology":"Microsoft.NETCore.App.Runtime.linux-x64","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in System.Net.Security. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\n.NET 11 post-handshake TLS client authentication can fail to verify the client certificate, allowing mutual-authentication requirements to be bypassed.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/464\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** Moderate\n- **Score:** 6.5\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`\n\n- **Weakness:** CWE-295 (Improper Certificate Validation)\n## Affected Platforms\n\n- **Platforms:** Linux, macOS\n- **Architectures:** All\n\n## Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | ---------------\nMicrosoft.NETCore.App.Runtime.linux-arm | >= 11.0.0-preview.1, <= 1","public_affected_ranges":[">= 11.0.0-preview.1, <= 11.0.0-rc.1"]},{"certainty":"source_listed","source_ids":["sr-527dc42e57b2b10f908464f1ae9c07d1"],"technology":"Microsoft.NETCore.App.Runtime.osx-arm64","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in System.Net.Security. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\n.NET 11 post-handshake TLS client authentication can fail to verify the client certificate, allowing mutual-authentication requirements to be bypassed.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/464\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** Moderate\n- **Score:** 6.5\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`\n\n- **Weakness:** CWE-295 (Improper Certificate Validation)\n## Affected Platforms\n\n- **Platforms:** Linux, macOS\n- **Architectures:** All\n\n## Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | ---------------\nMicrosoft.NETCore.App.Runtime.linux-arm | >= 11.0.0-preview.1, <= 1","public_affected_ranges":[">= 11.0.0-preview.1, <= 11.0.0-rc.1"]},{"certainty":"source_listed","source_ids":["sr-527dc42e57b2b10f908464f1ae9c07d1"],"technology":"Microsoft.NETCore.App.Runtime.osx-x64","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in System.Net.Security. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\n.NET 11 post-handshake TLS client authentication can fail to verify the client certificate, allowing mutual-authentication requirements to be bypassed.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/464\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** Moderate\n- **Score:** 6.5\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`\n\n- **Weakness:** CWE-295 (Improper Certificate Validation)\n## Affected Platforms\n\n- **Platforms:** Linux, macOS\n- **Architectures:** All\n\n## Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | ---------------\nMicrosoft.NETCore.App.Runtime.linux-arm | >= 11.0.0-preview.1, <= 1","public_affected_ranges":[">= 11.0.0-preview.1, <= 11.0.0-rc.1"]}],"null_published_at":"2026-11-07T14:01:55.435Z","source_updated_at":"2026-10-19T16:15:40.000Z","source_disclosed_at":"2026-10-13T20:00:42.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-10-31T23:14:14.588Z"},{"id":"NVI-00011890","kind":"vulnerability","title":"Microsoft Security Advisory CVE-2026-70194 - .NET and Visual Studio Security Feature Bypass Vulnerability","revision":3,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-fqpq-cx42-9jmm","CVE-2026-70194"],"plain_summary":"GitHub lists this reviewed advisory for Microsoft.NETCore.App.Runtime.linux-arm, Microsoft.NETCore.App.Runtime.linux-arm64, Microsoft.NETCore.App.Runtime.linux-musl-arm, Microsoft.NETCore.App.Runtime.linux-musl-arm64, Microsoft.NETCore.App.Runtime.linux-musl-x64. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-8d53371cbb8d446edbd84e3f237216a5"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-10-19T16:15:40.000Z","value":"6.5 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-527dc42e57b2b10f908464f1ae9c07d1"},{"kind":"CVSS","as_of":"2026-10-22T22:18:35.283Z","value":"6.5 MEDIUM (3.1)","meaning":"secure@microsoft.com severity; no combined Null risk score.","source_id":"sr-02d85c0ce810421a41f5529a5947e3e2"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.486%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.41884. Missing scores are unknown.","source_id":"sr-8d53371cbb8d446edbd84e3f237216a5"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-527dc42e57b2b10f908464f1ae9c07d1","url":"https://github.com/advisories/GHSA-fqpq-cx42-9jmm","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-fqpq-cx42-9jmm","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T23:14:14.588Z"},{"id":"sr-02d85c0ce810421a41f5529a5947e3e2","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-70194","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-70194","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-04T09:58:41.978Z"},{"id":"sr-8d53371cbb8d446edbd84e3f237216a5","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-70194","publisher":"FIRST EPSS","observed_at":"2026-11-01T01:39:43.085Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-527dc42e57b2b10f908464f1ae9c07d1"],"technology":"Microsoft.NETCore.App.Runtime.linux-arm","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in System.Net.Security. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\n.NET 11 post-handshake TLS client authentication can fail to verify the client certificate, allowing mutual-authentication requirements to be bypassed.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/464\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** Moderate\n- **Score:** 6.5\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`\n\n- **Weakness:** CWE-295 (Improper Certificate Validation)\n## Affected Platforms\n\n- **Platforms:** Linux, macOS\n- **Architectures:** All\n\n## Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | ---------------\nMicrosoft.NETCore.App.Runtime.linux-arm | >= 11.0.0-preview.1, <= 1","public_affected_ranges":[">= 11.0.0-preview.1, <= 11.0.0-rc.1"]},{"certainty":"source_listed","source_ids":["sr-527dc42e57b2b10f908464f1ae9c07d1"],"technology":"Microsoft.NETCore.App.Runtime.linux-arm64","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in System.Net.Security. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\n.NET 11 post-handshake TLS client authentication can fail to verify the client certificate, allowing mutual-authentication requirements to be bypassed.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/464\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** Moderate\n- **Score:** 6.5\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`\n\n- **Weakness:** CWE-295 (Improper Certificate Validation)\n## Affected Platforms\n\n- **Platforms:** Linux, macOS\n- **Architectures:** All\n\n## Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | ---------------\nMicrosoft.NETCore.App.Runtime.linux-arm | >= 11.0.0-preview.1, <= 1","public_affected_ranges":[">= 11.0.0-preview.1, <= 11.0.0-rc.1"]},{"certainty":"source_listed","source_ids":["sr-527dc42e57b2b10f908464f1ae9c07d1"],"technology":"Microsoft.NETCore.App.Runtime.linux-musl-arm","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in System.Net.Security. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\n.NET 11 post-handshake TLS client authentication can fail to verify the client certificate, allowing mutual-authentication requirements to be bypassed.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/464\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** Moderate\n- **Score:** 6.5\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`\n\n- **Weakness:** CWE-295 (Improper Certificate Validation)\n## Affected Platforms\n\n- **Platforms:** Linux, macOS\n- **Architectures:** All\n\n## Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | ---------------\nMicrosoft.NETCore.App.Runtime.linux-arm | >= 11.0.0-preview.1, <= 1","public_affected_ranges":[">= 11.0.0-preview.1, <= 11.0.0-rc.1"]},{"certainty":"source_listed","source_ids":["sr-527dc42e57b2b10f908464f1ae9c07d1"],"technology":"Microsoft.NETCore.App.Runtime.linux-musl-arm64","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in System.Net.Security. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\n.NET 11 post-handshake TLS client authentication can fail to verify the client certificate, allowing mutual-authentication requirements to be bypassed.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/464\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** Moderate\n- **Score:** 6.5\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`\n\n- **Weakness:** CWE-295 (Improper Certificate Validation)\n## Affected Platforms\n\n- **Platforms:** Linux, macOS\n- **Architectures:** All\n\n## Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | ---------------\nMicrosoft.NETCore.App.Runtime.linux-arm | >= 11.0.0-preview.1, <= 1","public_affected_ranges":[">= 11.0.0-preview.1, <= 11.0.0-rc.1"]},{"certainty":"source_listed","source_ids":["sr-527dc42e57b2b10f908464f1ae9c07d1"],"technology":"Microsoft.NETCore.App.Runtime.linux-musl-x64","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in System.Net.Security. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\n.NET 11 post-handshake TLS client authentication can fail to verify the client certificate, allowing mutual-authentication requirements to be bypassed.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/464\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** Moderate\n- **Score:** 6.5\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`\n\n- **Weakness:** CWE-295 (Improper Certificate Validation)\n## Affected Platforms\n\n- **Platforms:** Linux, macOS\n- **Architectures:** All\n\n## Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | ---------------\nMicrosoft.NETCore.App.Runtime.linux-arm | >= 11.0.0-preview.1, <= 1","public_affected_ranges":[">= 11.0.0-preview.1, <= 11.0.0-rc.1"]},{"certainty":"source_listed","source_ids":["sr-527dc42e57b2b10f908464f1ae9c07d1"],"technology":"Microsoft.NETCore.App.Runtime.linux-x64","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in System.Net.Security. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\n.NET 11 post-handshake TLS client authentication can fail to verify the client certificate, allowing mutual-authentication requirements to be bypassed.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/464\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** Moderate\n- **Score:** 6.5\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`\n\n- **Weakness:** CWE-295 (Improper Certificate Validation)\n## Affected Platforms\n\n- **Platforms:** Linux, macOS\n- **Architectures:** All\n\n## Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | ---------------\nMicrosoft.NETCore.App.Runtime.linux-arm | >= 11.0.0-preview.1, <= 1","public_affected_ranges":[">= 11.0.0-preview.1, <= 11.0.0-rc.1"]},{"certainty":"source_listed","source_ids":["sr-527dc42e57b2b10f908464f1ae9c07d1"],"technology":"Microsoft.NETCore.App.Runtime.osx-arm64","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in System.Net.Security. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\n.NET 11 post-handshake TLS client authentication can fail to verify the client certificate, allowing mutual-authentication requirements to be bypassed.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/464\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** Moderate\n- **Score:** 6.5\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`\n\n- **Weakness:** CWE-295 (Improper Certificate Validation)\n## Affected Platforms\n\n- **Platforms:** Linux, macOS\n- **Architectures:** All\n\n## Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | ---------------\nMicrosoft.NETCore.App.Runtime.linux-arm | >= 11.0.0-preview.1, <= 1","public_affected_ranges":[">= 11.0.0-preview.1, <= 11.0.0-rc.1"]},{"certainty":"source_listed","source_ids":["sr-527dc42e57b2b10f908464f1ae9c07d1"],"technology":"Microsoft.NETCore.App.Runtime.osx-x64","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in System.Net.Security. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\n.NET 11 post-handshake TLS client authentication can fail to verify the client certificate, allowing mutual-authentication requirements to be bypassed.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/464\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** Moderate\n- **Score:** 6.5\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`\n\n- **Weakness:** CWE-295 (Improper Certificate Validation)\n## Affected Platforms\n\n- **Platforms:** Linux, macOS\n- **Architectures:** All\n\n## Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | ---------------\nMicrosoft.NETCore.App.Runtime.linux-arm | >= 11.0.0-preview.1, <= 1","public_affected_ranges":[">= 11.0.0-preview.1, <= 11.0.0-rc.1"]}],"null_published_at":"2026-11-05T03:53:00.764Z","source_updated_at":"2026-10-19T16:15:40.000Z","source_disclosed_at":"2026-10-13T20:00:42.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-10-31T23:14:14.588Z"},{"id":"NVI-00011890","kind":"vulnerability","title":"Microsoft Security Advisory CVE-2026-70194 - .NET and Visual Studio Security Feature Bypass Vulnerability","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-fqpq-cx42-9jmm","CVE-2026-70194"],"plain_summary":"GitHub lists this reviewed advisory for Microsoft.NETCore.App.Runtime.linux-arm, Microsoft.NETCore.App.Runtime.linux-arm64, Microsoft.NETCore.App.Runtime.linux-musl-arm, Microsoft.NETCore.App.Runtime.linux-musl-arm64, Microsoft.NETCore.App.Runtime.linux-musl-x64. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-02d85c0ce810421a41f5529a5947e3e2"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-10-19T16:15:40.000Z","value":"6.5 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-527dc42e57b2b10f908464f1ae9c07d1"},{"kind":"CVSS","as_of":"2026-10-22T22:18:35.283Z","value":"6.5 MEDIUM (3.1)","meaning":"secure@microsoft.com severity; no combined Null risk score.","source_id":"sr-02d85c0ce810421a41f5529a5947e3e2"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-527dc42e57b2b10f908464f1ae9c07d1","url":"https://github.com/advisories/GHSA-fqpq-cx42-9jmm","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-fqpq-cx42-9jmm","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T23:14:14.588Z"},{"id":"sr-02d85c0ce810421a41f5529a5947e3e2","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-70194","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-70194","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-04T09:58:41.978Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-527dc42e57b2b10f908464f1ae9c07d1"],"technology":"Microsoft.NETCore.App.Runtime.linux-arm","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in System.Net.Security. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\n.NET 11 post-handshake TLS client authentication can fail to verify the client certificate, allowing mutual-authentication requirements to be bypassed.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/464\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** Moderate\n- **Score:** 6.5\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`\n\n- **Weakness:** CWE-295 (Improper Certificate Validation)\n## Affected Platforms\n\n- **Platforms:** Linux, macOS\n- **Architectures:** All\n\n## Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | ---------------\nMicrosoft.NETCore.App.Runtime.linux-arm | >= 11.0.0-preview.1, <= 1","public_affected_ranges":[">= 11.0.0-preview.1, <= 11.0.0-rc.1"]},{"certainty":"source_listed","source_ids":["sr-527dc42e57b2b10f908464f1ae9c07d1"],"technology":"Microsoft.NETCore.App.Runtime.linux-arm64","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in System.Net.Security. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\n.NET 11 post-handshake TLS client authentication can fail to verify the client certificate, allowing mutual-authentication requirements to be bypassed.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/464\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** Moderate\n- **Score:** 6.5\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`\n\n- **Weakness:** CWE-295 (Improper Certificate Validation)\n## Affected Platforms\n\n- **Platforms:** Linux, macOS\n- **Architectures:** All\n\n## Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | ---------------\nMicrosoft.NETCore.App.Runtime.linux-arm | >= 11.0.0-preview.1, <= 1","public_affected_ranges":[">= 11.0.0-preview.1, <= 11.0.0-rc.1"]},{"certainty":"source_listed","source_ids":["sr-527dc42e57b2b10f908464f1ae9c07d1"],"technology":"Microsoft.NETCore.App.Runtime.linux-musl-arm","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in System.Net.Security. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\n.NET 11 post-handshake TLS client authentication can fail to verify the client certificate, allowing mutual-authentication requirements to be bypassed.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/464\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** Moderate\n- **Score:** 6.5\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`\n\n- **Weakness:** CWE-295 (Improper Certificate Validation)\n## Affected Platforms\n\n- **Platforms:** Linux, macOS\n- **Architectures:** All\n\n## Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | ---------------\nMicrosoft.NETCore.App.Runtime.linux-arm | >= 11.0.0-preview.1, <= 1","public_affected_ranges":[">= 11.0.0-preview.1, <= 11.0.0-rc.1"]},{"certainty":"source_listed","source_ids":["sr-527dc42e57b2b10f908464f1ae9c07d1"],"technology":"Microsoft.NETCore.App.Runtime.linux-musl-arm64","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in System.Net.Security. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\n.NET 11 post-handshake TLS client authentication can fail to verify the client certificate, allowing mutual-authentication requirements to be bypassed.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/464\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** Moderate\n- **Score:** 6.5\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`\n\n- **Weakness:** CWE-295 (Improper Certificate Validation)\n## Affected Platforms\n\n- **Platforms:** Linux, macOS\n- **Architectures:** All\n\n## Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | ---------------\nMicrosoft.NETCore.App.Runtime.linux-arm | >= 11.0.0-preview.1, <= 1","public_affected_ranges":[">= 11.0.0-preview.1, <= 11.0.0-rc.1"]},{"certainty":"source_listed","source_ids":["sr-527dc42e57b2b10f908464f1ae9c07d1"],"technology":"Microsoft.NETCore.App.Runtime.linux-musl-x64","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in System.Net.Security. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\n.NET 11 post-handshake TLS client authentication can fail to verify the client certificate, allowing mutual-authentication requirements to be bypassed.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/464\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** Moderate\n- **Score:** 6.5\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`\n\n- **Weakness:** CWE-295 (Improper Certificate Validation)\n## Affected Platforms\n\n- **Platforms:** Linux, macOS\n- **Architectures:** All\n\n## Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | ---------------\nMicrosoft.NETCore.App.Runtime.linux-arm | >= 11.0.0-preview.1, <= 1","public_affected_ranges":[">= 11.0.0-preview.1, <= 11.0.0-rc.1"]},{"certainty":"source_listed","source_ids":["sr-527dc42e57b2b10f908464f1ae9c07d1"],"technology":"Microsoft.NETCore.App.Runtime.linux-x64","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in System.Net.Security. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\n.NET 11 post-handshake TLS client authentication can fail to verify the client certificate, allowing mutual-authentication requirements to be bypassed.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/464\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** Moderate\n- **Score:** 6.5\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`\n\n- **Weakness:** CWE-295 (Improper Certificate Validation)\n## Affected Platforms\n\n- **Platforms:** Linux, macOS\n- **Architectures:** All\n\n## Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | ---------------\nMicrosoft.NETCore.App.Runtime.linux-arm | >= 11.0.0-preview.1, <= 1","public_affected_ranges":[">= 11.0.0-preview.1, <= 11.0.0-rc.1"]},{"certainty":"source_listed","source_ids":["sr-527dc42e57b2b10f908464f1ae9c07d1"],"technology":"Microsoft.NETCore.App.Runtime.osx-arm64","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in System.Net.Security. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\n.NET 11 post-handshake TLS client authentication can fail to verify the client certificate, allowing mutual-authentication requirements to be bypassed.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/464\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** Moderate\n- **Score:** 6.5\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`\n\n- **Weakness:** CWE-295 (Improper Certificate Validation)\n## Affected Platforms\n\n- **Platforms:** Linux, macOS\n- **Architectures:** All\n\n## Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | ---------------\nMicrosoft.NETCore.App.Runtime.linux-arm | >= 11.0.0-preview.1, <= 1","public_affected_ranges":[">= 11.0.0-preview.1, <= 11.0.0-rc.1"]},{"certainty":"source_listed","source_ids":["sr-527dc42e57b2b10f908464f1ae9c07d1"],"technology":"Microsoft.NETCore.App.Runtime.osx-x64","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in System.Net.Security. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\n.NET 11 post-handshake TLS client authentication can fail to verify the client certificate, allowing mutual-authentication requirements to be bypassed.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/464\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** Moderate\n- **Score:** 6.5\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`\n\n- **Weakness:** CWE-295 (Improper Certificate Validation)\n## Affected Platforms\n\n- **Platforms:** Linux, macOS\n- **Architectures:** All\n\n## Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | ---------------\nMicrosoft.NETCore.App.Runtime.linux-arm | >= 11.0.0-preview.1, <= 1","public_affected_ranges":[">= 11.0.0-preview.1, <= 11.0.0-rc.1"]}],"null_published_at":"2026-11-04T10:04:35.896Z","source_updated_at":"2026-10-19T16:15:40.000Z","source_disclosed_at":"2026-10-13T20:00:42.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T23:14:14.588Z"},{"id":"NVI-00011890","kind":"vulnerability","title":"Microsoft Security Advisory CVE-2026-70194 - .NET and Visual Studio Security Feature Bypass Vulnerability","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-fqpq-cx42-9jmm","CVE-2026-70194"],"plain_summary":"GitHub lists this reviewed advisory for Microsoft.NETCore.App.Runtime.linux-arm, Microsoft.NETCore.App.Runtime.linux-arm64, Microsoft.NETCore.App.Runtime.linux-musl-arm, Microsoft.NETCore.App.Runtime.linux-musl-arm64, Microsoft.NETCore.App.Runtime.linux-musl-x64. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-527dc42e57b2b10f908464f1ae9c07d1"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-10-19T16:15:40.000Z","value":"6.5 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-527dc42e57b2b10f908464f1ae9c07d1"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-527dc42e57b2b10f908464f1ae9c07d1","url":"https://github.com/advisories/GHSA-fqpq-cx42-9jmm","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-fqpq-cx42-9jmm","publisher":"GitHub Advisory Database","observed_at":"2026-10-31T23:14:14.588Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-527dc42e57b2b10f908464f1ae9c07d1"],"technology":"Microsoft.NETCore.App.Runtime.linux-arm","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in System.Net.Security. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\n.NET 11 post-handshake TLS client authentication can fail to verify the client certificate, allowing mutual-authentication requirements to be bypassed.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/464\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** Moderate\n- **Score:** 6.5\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`\n\n- **Weakness:** CWE-295 (Improper Certificate Validation)\n## Affected Platforms\n\n- **Platforms:** Linux, macOS\n- **Architectures:** All\n\n## Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | ---------------\nMicrosoft.NETCore.App.Runtime.linux-arm | >= 11.0.0-preview.1, <= 1","public_affected_ranges":[">= 11.0.0-preview.1, <= 11.0.0-rc.1"]},{"certainty":"source_listed","source_ids":["sr-527dc42e57b2b10f908464f1ae9c07d1"],"technology":"Microsoft.NETCore.App.Runtime.linux-arm64","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in System.Net.Security. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\n.NET 11 post-handshake TLS client authentication can fail to verify the client certificate, allowing mutual-authentication requirements to be bypassed.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/464\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** Moderate\n- **Score:** 6.5\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`\n\n- **Weakness:** CWE-295 (Improper Certificate Validation)\n## Affected Platforms\n\n- **Platforms:** Linux, macOS\n- **Architectures:** All\n\n## Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | ---------------\nMicrosoft.NETCore.App.Runtime.linux-arm | >= 11.0.0-preview.1, <= 1","public_affected_ranges":[">= 11.0.0-preview.1, <= 11.0.0-rc.1"]},{"certainty":"source_listed","source_ids":["sr-527dc42e57b2b10f908464f1ae9c07d1"],"technology":"Microsoft.NETCore.App.Runtime.linux-musl-arm","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in System.Net.Security. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\n.NET 11 post-handshake TLS client authentication can fail to verify the client certificate, allowing mutual-authentication requirements to be bypassed.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/464\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** Moderate\n- **Score:** 6.5\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`\n\n- **Weakness:** CWE-295 (Improper Certificate Validation)\n## Affected Platforms\n\n- **Platforms:** Linux, macOS\n- **Architectures:** All\n\n## Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | ---------------\nMicrosoft.NETCore.App.Runtime.linux-arm | >= 11.0.0-preview.1, <= 1","public_affected_ranges":[">= 11.0.0-preview.1, <= 11.0.0-rc.1"]},{"certainty":"source_listed","source_ids":["sr-527dc42e57b2b10f908464f1ae9c07d1"],"technology":"Microsoft.NETCore.App.Runtime.linux-musl-arm64","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in System.Net.Security. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\n.NET 11 post-handshake TLS client authentication can fail to verify the client certificate, allowing mutual-authentication requirements to be bypassed.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/464\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** Moderate\n- **Score:** 6.5\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`\n\n- **Weakness:** CWE-295 (Improper Certificate Validation)\n## Affected Platforms\n\n- **Platforms:** Linux, macOS\n- **Architectures:** All\n\n## Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | ---------------\nMicrosoft.NETCore.App.Runtime.linux-arm | >= 11.0.0-preview.1, <= 1","public_affected_ranges":[">= 11.0.0-preview.1, <= 11.0.0-rc.1"]},{"certainty":"source_listed","source_ids":["sr-527dc42e57b2b10f908464f1ae9c07d1"],"technology":"Microsoft.NETCore.App.Runtime.linux-musl-x64","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in System.Net.Security. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\n.NET 11 post-handshake TLS client authentication can fail to verify the client certificate, allowing mutual-authentication requirements to be bypassed.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/464\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** Moderate\n- **Score:** 6.5\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`\n\n- **Weakness:** CWE-295 (Improper Certificate Validation)\n## Affected Platforms\n\n- **Platforms:** Linux, macOS\n- **Architectures:** All\n\n## Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | ---------------\nMicrosoft.NETCore.App.Runtime.linux-arm | >= 11.0.0-preview.1, <= 1","public_affected_ranges":[">= 11.0.0-preview.1, <= 11.0.0-rc.1"]},{"certainty":"source_listed","source_ids":["sr-527dc42e57b2b10f908464f1ae9c07d1"],"technology":"Microsoft.NETCore.App.Runtime.linux-x64","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in System.Net.Security. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\n.NET 11 post-handshake TLS client authentication can fail to verify the client certificate, allowing mutual-authentication requirements to be bypassed.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/464\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** Moderate\n- **Score:** 6.5\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`\n\n- **Weakness:** CWE-295 (Improper Certificate Validation)\n## Affected Platforms\n\n- **Platforms:** Linux, macOS\n- **Architectures:** All\n\n## Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | ---------------\nMicrosoft.NETCore.App.Runtime.linux-arm | >= 11.0.0-preview.1, <= 1","public_affected_ranges":[">= 11.0.0-preview.1, <= 11.0.0-rc.1"]},{"certainty":"source_listed","source_ids":["sr-527dc42e57b2b10f908464f1ae9c07d1"],"technology":"Microsoft.NETCore.App.Runtime.osx-arm64","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in System.Net.Security. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\n.NET 11 post-handshake TLS client authentication can fail to verify the client certificate, allowing mutual-authentication requirements to be bypassed.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/464\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** Moderate\n- **Score:** 6.5\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`\n\n- **Weakness:** CWE-295 (Improper Certificate Validation)\n## Affected Platforms\n\n- **Platforms:** Linux, macOS\n- **Architectures:** All\n\n## Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | ---------------\nMicrosoft.NETCore.App.Runtime.linux-arm | >= 11.0.0-preview.1, <= 1","public_affected_ranges":[">= 11.0.0-preview.1, <= 11.0.0-rc.1"]},{"certainty":"source_listed","source_ids":["sr-527dc42e57b2b10f908464f1ae9c07d1"],"technology":"Microsoft.NETCore.App.Runtime.osx-x64","known_exclusions":[],"conditions_summary":"## Executive summary\n\nMicrosoft is releasing this security advisory to provide information about a vulnerability in System.Net.Security. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability.\n\n.NET 11 post-handshake TLS client authentication can fail to verify the client certificate, allowing mutual-authentication requirements to be bypassed.\n\n## Announcement\n\nAnnouncement for this issue can be found at https://github.com/dotnet/announcements/issues/464\n\n## CVSS Details\n\n- **Version:** 3.1\n- **Severity:** Moderate\n- **Score:** 6.5\n- **Vector:** `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`\n\n- **Weakness:** CWE-295 (Improper Certificate Validation)\n## Affected Platforms\n\n- **Platforms:** Linux, macOS\n- **Architectures:** All\n\n## Affected Packages\n\nThe vulnerability affects Microsoft .NET projects that use an affected package version listed below.\n\nPackage name | Affected version | Patched version\n------------ | ---------------- | ---------------\nMicrosoft.NETCore.App.Runtime.linux-arm | >= 11.0.0-preview.1, <= 1","public_affected_ranges":[">= 11.0.0-preview.1, <= 11.0.0-rc.1"]}],"null_published_at":"2026-11-01T01:03:56.613Z","source_updated_at":"2026-10-19T16:15:40.000Z","source_disclosed_at":"2026-10-13T20:00:42.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-10-31T23:14:14.588Z"}],"next_cursor":null,"snapshot_revision":"42594"}