{"schema":"threatline.record/2","record":{"id":"CVE-2018-0172","aliases":[],"summary":"Cisco IOS and IOS XE Software Improper Input Validation Vulnerability","details":"A vulnerability in the DHCP option 82 encapsulation functionality of Cisco IOS Software and Cisco IOS XE Software could allow for denial-of-service (DoS).","categories":["Operating systems"],"product":"IOS and IOS XE Software","vendor":"Cisco","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2018-0172","source_modified_at":"2026-01-12T21:59:22.400Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Cisco IOS and IOS XE","vendor":"n/a","versions":[{"status":"affected","version":"Cisco IOS and IOS XE"}],"defaultStatus":null}],"fixed_versions":[],"cvss":8.6,"severity":"High","kev":{"listed":true,"date_added":"2022-03-03","due_date":"2022-03-17","required_action":"Apply updates per vendor instructions.","ransomware_campaign_use":"Unknown"},"epss":{"probability":0.0782,"percentile":0.94666,"score_date":"2026-10-23"},"published_at":"2018-03-28T22:00:00.000Z","modified_at":"2026-01-12T21:59:22.400Z","provenance":[{"source":"CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T17:00:09.9001Z"},{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2018-0172","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-01-12T21:59:22.400Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2018-0172","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CISA KEV","CVE List","EPSS"],"references":[{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-0172","source":"CISA KEV"},{"source":"CVE List","url":"https://ics-cert.us-cert.gov/advisories/ICSA-18-107-04","tags":["x_refsource_MISC","x_transferred"]},{"source":"CVE List","url":"https://www.tenable.com/security/research/tra-2018-06","tags":["x_refsource_MISC","x_transferred"]},{"source":"CVE List","url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-dhcpr1","tags":["x_refsource_CONFIRM","x_transferred"]},{"source":"CVE List","url":"https://ics-cert.us-cert.gov/advisories/ICSA-18-107-05","tags":["x_refsource_MISC","x_transferred"]},{"source":"CVE List","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-0172","tags":["government-resource"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CISA ADP","ssvc":{"exploitation":"active","automatable":"no","technical_impact":"total","assessed_at":"2024-11-08T17:24:09.606073Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-01-12T21:59:22.400Z","content_hash":"7e33e47ad915c04c7af37cbaf8de2ca5885956e724c91cf84a7a856172e08266"}}