{"items":[{"id":"NVI-00000262","kind":"vulnerability","title":"CVE-2018-0156","revision":4,"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-2018-0156"],"plain_summary":"A vulnerability in the Smart Install feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to improper validation of packet data. An attacker could exploit this vulnerability by sending a crafted packet to an affected device on TCP port 4786. Only Smart Install client switches are affected. 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Dataset date/model retained; FIRST services terms apply.","title":"CVE-2018-0156","publisher":"FIRST EPSS","observed_at":"2026-10-31T21:41:13.231Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-3aef6fa89435ff65cc512b190b24bcce"],"technology":"Cisco IOS and IOS XE","known_exclusions":[],"conditions_summary":"A vulnerability in the Smart Install feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to improper validation of packet data. An attacker could exploit this vulnerability by sending a crafted packet to an affected device on TCP port 4786. Only Smart Install client switches are affected. Cisco devices that are configured as a Smart Install director are not affected by this vulnerability. Cisco Bug IDs: CSCvd40673.","public_affected_ranges":["Cisco IOS and IOS XE"]},{"certainty":"source_listed","source_ids":["sr-26daccdcec845107edd57e48a55c7457"],"technology":"Cisco IOS Software and Cisco IOS XE Software","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":"2026-11-08T08:10:35.857Z","source_updated_at":"2026-01-12T21:54:00.542Z","source_disclosed_at":"2018-03-28T22:00:00.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T20:54:12.600Z"},{"id":"NVI-00000262","kind":"vulnerability","title":"Cisco IOS Software and Cisco IOS XE Software Smart Install Denial-of-Service 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-2018-0156"],"plain_summary":"CISA lists CVE-2018-0156 in its Known Exploited Vulnerabilities catalog. The catalog names Cisco IOS Software and Cisco IOS XE Software; 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-26daccdcec845107edd57e48a55c7457"],"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-9cedb8f4680f113dd98da6af4e8c3903"],"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":"2022-03-03T00:00:00.000Z","value":"Listed","meaning":"CISA lists known exploitation. 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Follow the linked vendor advisory for version and configuration prerequisites.","public_affected_ranges":[]}],"null_published_at":"2026-10-31T22:12:33.361Z","source_updated_at":"2022-03-03T00:00:00.000Z","source_disclosed_at":null,"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":"2026-10-31T20:54:12.600Z"},{"id":"NVI-00000262","kind":"vulnerability","title":"Cisco IOS Software and Cisco IOS XE Software Smart Install Denial-of-Service 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-2018-0156"],"plain_summary":"CISA lists CVE-2018-0156 in its Known Exploited Vulnerabilities catalog. 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This report has not examined your application.","related_sources":[{"id":"sr-26daccdcec845107edd57e48a55c7457","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-2018-0156","publisher":"CISA","observed_at":"2026-10-31T20:54:12.600Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-26daccdcec845107edd57e48a55c7457"],"technology":"Cisco IOS Software and Cisco IOS XE Software","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":"2026-10-31T21:27:29.895Z","source_updated_at":"2022-03-03T00:00:00.000Z","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":"39771"}