{"id":"CVE-2026-76490","aliases":["EUVD-2026-107353","GHSA-4h68-8g8q-39mj"],"status":"published","title":"Cisco Expressway Series Software Hardening Release: October 2026 - Out-of-bounds Write Vulnerabilities","description":"As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Expressway Series software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities. \u0026nbsp;\r\n\r\nThe vulnerabilities tracked by CVE-2026-76490 are related to issues concerning out-of-bounds writes that are grouped under the Common Weakness Enumeration (CWE) Base CWE-787.","severity":{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00448,"percentile":0.39379,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2026-10-21T16:17:29Z","modified":"2026-11-07T17:29:43Z","products":[{"vendor":"cisco","product":"cisco telepresence video communication server (vcs) expressway"}],"references":[{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-exwy-hardening-FhcqBVcs"},{"url":"https://www.cve.org/Media/News/item/blog/2026/06/16/Preserving-Vulnerability-Level-Identification"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-76490"},{"url":"https://github.com/advisories/GHSA-4h68-8g8q-39mj"}],"sources":{"cve":[{"id":"CVE-2026-76490","title":"Cisco Expressway Series Software Hardening Release: October 2026 - Out-of-bounds Write Vulnerabilities","description":"As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Expressway Series software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities. \u0026nbsp;\r\n\r\nThe vulnerabilities tracked by CVE-2026-76490 are related to issues concerning out-of-bounds writes that are grouped under the Common Weakness Enumeration (CWE) Base CWE-787.","status":"published","published":"2026-10-21T16:17:29.557Z","modified":"2026-11-07T17:29:43.355Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-787"],"updated_at":"2026-11-07T18:35:04.500123Z"}],"euvd":[{"id":"EUVD-2026-107353","description":"As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Expressway Series software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities. \u0026nbsp;\r\n\r\nThe vulnerabilities tracked by CVE-2026-76490 are related to issues concerning out-of-bounds writes that are grouped under the Common Weakness Enumeration (CWE) Base CWE-787.","status":"published","published":"2026-10-21T16:17:29Z","modified":"2026-11-07T17:29:43Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-07T18:10:08.696559Z"}],"ghsa":[{"id":"GHSA-4h68-8g8q-39mj","title":"As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco...","description":"As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Expressway Series software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities. \u0026nbsp;\n\nThe vulnerabilities tracked by CVE-2026-76490 are related to issues concerning out-of-bounds writes that are grouped under the Common Weakness Enumeration (CWE) Base CWE-787.","status":"published","published":"2026-10-21T18:33:27Z","modified":"2026-11-07T18:31:34Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-787"],"updated_at":"2026-11-07T18:38:39.596198Z"}],"nvd":[{"id":"CVE-2026-76490","description":"As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Expressway Series software engineering team has conducted a comprehensive internal security review. This review resulted in software hardening releases that address multiple internally discovered vulnerabilities. \u0026nbsp;\r\n\r\nThe vulnerabilities tracked by CVE-2026-76490 are related to issues concerning out-of-bounds writes that are grouped under the Common Weakness Enumeration (CWE) Base CWE-787.","status":"published","published":"2026-10-21T17:19:08.34Z","modified":"2026-11-07T18:17:27.803Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-787"],"updated_at":"2026-11-07T20:06:31.483785Z"}]}}