{"items":[{"id":"NVI-00001120","kind":"vulnerability","title":"Veritas Backup Exec Agent Improper Authentication Vulnerability","revision":3,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","CISA catalog date-added and due-date fields are not the original vulnerability disclosure date or universal legal deadlines.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["CVE-2021-27877"],"plain_summary":"CISA lists CVE-2021-27877 in its Known Exploited Vulnerabilities catalog. The catalog names Veritas Backup Exec Agent; it does not establish that a particular visitor is exposed or compromised.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Apply updates per vendor instructions.","source_ids":["sr-a1b346c0090aa4e3665d0547c2ca4fbb"],"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},{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-3815db5a87e6fd0f57862c2f43829b54"],"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":"CISA_KEV","as_of":"2023-04-07T00:00:00.000Z","value":"Listed","meaning":"CISA lists known exploitation. This does not establish exploitation of your system.","source_id":"sr-a1b346c0090aa4e3665d0547c2ca4fbb"},{"kind":"CVSS","as_of":"2026-06-17T03:45:32.920Z","value":"7.5 HIGH (2.0)","meaning":"nvd@nist.gov severity; no combined Null risk score.","source_id":"sr-2cb29e037c78d62f557b2e9e731def35"},{"kind":"CVSS","as_of":"2026-06-17T03:45:32.920Z","value":"8.2 HIGH (3.1)","meaning":"cve@mitre.org severity; no combined Null risk score.","source_id":"sr-2cb29e037c78d62f557b2e9e731def35"},{"kind":"CVSS","as_of":"2026-06-17T03:45:32.920Z","value":"9.8 CRITICAL (3.1)","meaning":"nvd@nist.gov severity; no combined Null risk score.","source_id":"sr-2cb29e037c78d62f557b2e9e731def35"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"64.910%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.99247. Missing scores are unknown.","source_id":"sr-3815db5a87e6fd0f57862c2f43829b54"}],"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-a1b346c0090aa4e3665d0547c2ca4fbb","url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","basis":"official_catalog","notes":"CISA KEV; CC0 1.0. Catalog assertions are not evidence of customer compromise.","title":"CVE-2021-27877","publisher":"CISA","observed_at":"2026-10-31T20:54:12.600Z"},{"id":"sr-2cb29e037c78d62f557b2e9e731def35","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-27877","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2021-27877","publisher":"NIST National Vulnerability Database","observed_at":"2026-10-31T21:42:44.403Z"},{"id":"sr-3815db5a87e6fd0f57862c2f43829b54","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-2021-27877","publisher":"FIRST EPSS","observed_at":"2026-10-31T21:41:13.231Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-a1b346c0090aa4e3665d0547c2ca4fbb"],"technology":"Veritas Backup Exec Agent","known_exclusions":[],"conditions_summary":"CISA does not supply a complete application-specific affected range here. Follow the linked vendor advisory for version and configuration prerequisites.","public_affected_ranges":[]}],"null_published_at":"2026-10-31T21:53:28.045Z","source_updated_at":"2023-04-07T00:00:00.000Z","source_disclosed_at":null,"is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T20:54:12.600Z"},{"id":"NVI-00001120","kind":"vulnerability","title":"Veritas Backup Exec Agent Improper Authentication Vulnerability","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","CISA catalog date-added and due-date fields are not the original vulnerability disclosure date or universal legal deadlines."],"lifecycle":"active","identifiers":["CVE-2021-27877"],"plain_summary":"CISA lists CVE-2021-27877 in its Known Exploited Vulnerabilities catalog. The catalog names Veritas Backup Exec Agent; it does not establish that a particular visitor is exposed or compromised.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Apply updates per vendor instructions.","source_ids":["sr-a1b346c0090aa4e3665d0547c2ca4fbb"],"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":"CISA_KEV","as_of":"2023-04-07T00:00:00.000Z","value":"Listed","meaning":"CISA lists known exploitation. This does not establish exploitation of your system.","source_id":"sr-a1b346c0090aa4e3665d0547c2ca4fbb"}],"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-a1b346c0090aa4e3665d0547c2ca4fbb","url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","basis":"official_catalog","notes":"CISA KEV; CC0 1.0. Catalog assertions are not evidence of customer compromise.","title":"CVE-2021-27877","publisher":"CISA","observed_at":"2026-10-31T20:54:12.600Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-a1b346c0090aa4e3665d0547c2ca4fbb"],"technology":"Veritas Backup Exec Agent","known_exclusions":[],"conditions_summary":"CISA does not supply a complete application-specific affected range here. Follow the linked vendor advisory for version and configuration prerequisites.","public_affected_ranges":[]}],"null_published_at":"2026-10-31T21:40:39.195Z","source_updated_at":"2023-04-07T00:00:00.000Z","source_disclosed_at":null,"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":"2026-10-31T20:54:12.600Z"}],"next_cursor":null,"snapshot_revision":"42594"}