{"schema":"threatline.record/2","record":{"id":"CVE-2026-76457","aliases":[],"summary":"Cisco NX-OS Software Security Hardening Release: October 2026 - Out-of-bounds Read Vulnerabilities","details":"As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco NX-OS engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities.\r\n\r\nThe vulnerabilities tracked by CVE-2026-76457 are related to out-of-bounds read issues that are grouped under the Common Weakness Enumeration (CWE) CWE-125.","categories":["Network & edge"],"product":"Cisco NX-OS Software","vendor":"Cisco","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-76457","source_modified_at":"2026-10-07T17:45:39.983Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"Cisco NX-OS Software","vendor":"Cisco","versions":[{"version":"8.2(5)","status":"affected"},{"version":"7.3(5)D1(1)","status":"affected"},{"version":"8.4(2)","status":"affected"},{"version":"8.4(3)","status":"affected"},{"version":"9.2(3)","status":"affected"},{"version":"8.2(1)","status":"affected"},{"version":"7.3(1)D1(1)","status":"affected"},{"version":"9.2(2v)","status":"affected"},{"version":"7.3(0)D1(1)","status":"affected"},{"version":"7.3(4)D1(1)","status":"affected"},{"version":"9.2(1)","status":"affected"},{"version":"9.2(2t)","status":"affected"},{"version":"9.2(3y)","status":"affected"},{"version":"9.3(2)","status":"affected"},{"version":"7.3(1)DY(1)","status":"affected"},{"version":"8.1(1)","status":"affected"},{"version":"8.2(2)","status":"affected"},{"version":"8.3(2)","status":"affected"},{"version":"7.3(2)D1(3a)","status":"affected"},{"version":"9.2(4)","status":"affected"},{"version":"8.1(2)","status":"affected"},{"version":"7.3(3)D1(1)","status":"affected"},{"version":"8.2(3)","status":"affected"},{"version":"8.3(1)","status":"affected"},{"version":"8.4(1)","status":"affected"},{"version":"8.1(1b)","status":"affected"},{"version":"7.3(0)DX(1)","status":"affected"},{"version":"7.3(2)D1(1)","status":"affected"},{"version":"9.3(1)","status":"affected"},{"version":"7.3(2)D1(2)","status":"affected"}],"defaultStatus":"unknown"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-76457","source_modified_at":"2026-10-07T17:45:39.983Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"Cisco NX-OS System Software in ACI Mode","vendor":"Cisco","versions":[{"version":"15.2(1g)","status":"affected"},{"version":"15.2(2e)","status":"affected"},{"version":"15.2(2f)","status":"affected"},{"version":"15.2(2g)","status":"affected"},{"version":"15.2(2h)","status":"affected"},{"version":"15.2(3f)","status":"affected"},{"version":"15.2(3e)","status":"affected"},{"version":"15.2(3g)","status":"affected"},{"version":"15.2(4d)","status":"affected"},{"version":"15.2(4e)","status":"affected"},{"version":"15.2(5c)","status":"affected"},{"version":"15.2(5d)","status":"affected"},{"version":"16.0(1g)","status":"affected"},{"version":"15.2(5e)","status":"affected"},{"version":"15.2(4f)","status":"affected"},{"version":"15.2(6e)","status":"affected"},{"version":"15.2(6h)","status":"affected"},{"version":"16.0(1j)","status":"affected"},{"version":"15.2(6g)","status":"affected"},{"version":"15.2(7f)","status":"affected"},{"version":"15.2(7g)","status":"affected"},{"version":"16.0(2h)","status":"affected"},{"version":"15.2(8d)","status":"affected"},{"version":"16.0(2j)","status":"affected"},{"version":"15.2(8e)","status":"affected"},{"version":"16.0(3d)","status":"affected"},{"version":"16.0(3e)","status":"affected"},{"version":"15.2(8f)","status":"affected"},{"version":"15.2(8g)","status":"affected"},{"version":"15.3(1d)","status":"affected"}],"defaultStatus":"unknown"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-76457","source_modified_at":"2026-10-07T17:45:39.983Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"Cisco Unified Computing System (Managed)","vendor":"Cisco","versions":[{"version":"4.0(1a)","status":"affected"},{"version":"4.1(1d)","status":"affected"},{"version":"4.0(4f)","status":"affected"},{"version":"4.0(4c)","status":"affected"},{"version":"4.0(2b)","status":"affected"},{"version":"4.1(2a)","status":"affected"},{"version":"4.0(4a)","status":"affected"},{"version":"4.0(4e)","status":"affected"},{"version":"4.0(4h)","status":"affected"},{"version":"4.0(2a)","status":"affected"},{"version":"4.1(1c)","status":"affected"},{"version":"4.0(1b)","status":"affected"},{"version":"4.1(1e)","status":"affected"},{"version":"4.0(4d)","status":"affected"},{"version":"4.0(4b)","status":"affected"},{"version":"4.0(2e)","status":"affected"},{"version":"4.1(1a)","status":"affected"},{"version":"4.0(4g)","status":"affected"},{"version":"4.0(1d)","status":"affected"},{"version":"4.0(1c)","status":"affected"},{"version":"4.0(4i)","status":"affected"},{"version":"4.0(2d)","status":"affected"},{"version":"4.1(1b)","status":"affected"},{"version":"4.1(2b)","status":"affected"},{"version":"4.0(4k)","status":"affected"},{"version":"4.1(3a)","status":"affected"},{"version":"4.1(3b)","status":"affected"},{"version":"4.1(2c)","status":"affected"},{"version":"4.0(4l)","status":"affected"},{"version":"4.1(4a)","status":"affected"}],"defaultStatus":"unknown"}],"fixed_versions":[],"cvss":8.6,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00278,"percentile":0.19223,"score_date":"2026-10-23"},"published_at":"2026-10-07T16:15:22.604Z","modified_at":"2026-10-07T17:45:39.983Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-76457","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-07T17:45:39.983Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-76457","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardening-nxosw1-cWzSbtR"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"yes","technical_impact":"partial","assessed_at":"2026-10-07T17:45:18.736672Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-07T17:45:39.983Z","content_hash":"b693b2d2018c36ba4e9ccc8e54e7bc8e04350d15b25a9a86b16a7889b6ff998c"}}