{"schema":"threatline.record/2","record":{"id":"CVE-2017-12240","aliases":[],"summary":"Cisco IOS and IOS XE Software DHCP Remote Code Execution Vulnerability","details":"The Dynamic Host Configuration Protocol (DHCP) relay subsystem of Cisco IOS and Cisco IOS XE Software contains a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code and gain full control of an affected system.","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-2017-12240","source_modified_at":"2026-01-12T21:47:19.251Z","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":9.8,"severity":"Critical","kev":{"listed":true,"date_added":"2022-03-03","due_date":"2022-03-24","required_action":"Apply updates per vendor instructions.","ransomware_campaign_use":"Unknown"},"epss":{"probability":0.13773,"percentile":0.96512,"score_date":"2026-10-23"},"published_at":"2017-09-28T07:00:00.000Z","modified_at":"2026-01-12T21:47:19.251Z","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-2017-12240","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-01-12T21:47:19.251Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2017-12240","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-2017-12240","source":"CISA KEV"},{"source":"CVE List","url":"https://quickview.cloudapps.cisco.com/quickview/bug/CSCuw77959","tags":["x_refsource_CONFIRM","x_transferred"]},{"source":"CVE List","url":"https://quickview.cloudapps.cisco.com/quickview/bug/CSCsm45390","tags":["x_refsource_CONFIRM","x_transferred"]},{"source":"CVE List","url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170927-dhcp","tags":["x_refsource_CONFIRM","x_transferred"]},{"source":"CVE List","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-12240","tags":["government-resource"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CISA ADP","ssvc":{"exploitation":"active","automatable":"yes","technical_impact":"total","assessed_at":"2024-11-08T16:05:13.721131Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-01-12T21:47:19.251Z","content_hash":"7289d08e5ac01ab5845f914ff3565f9393841afda5d1b6ec02bea28e4cde3e29"}}