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.   The 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.
History

Sat, 07 Nov 2026 18:30:00 +0000


Thu, 22 Oct 2026 15:30:00 +0000

Type Values Removed Values Added
First Time appeared Cisco
Cisco expressway Series
Vendors & Products Cisco
Cisco expressway Series

Thu, 22 Oct 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 21 Oct 2026 17:15:00 +0000

Type Values Removed Values Added
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.   The 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.
Title Cisco Expressway Series Software Hardening Release: October 2026 - Out-of-bounds Write Vulnerabilities
Weaknesses CWE-787
References
Metrics cvssV3_1

{'score': 8.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: cisco

Published: 2026-10-21T16:17:29.557Z

Updated: 2026-11-07T17:29:43.355Z

Reserved: 2026-08-19T12:02:03.640Z

Link: CVE-2026-76490

cve-icon Vulnrichment

Updated: 2026-11-07T17:29:43.355Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-21T17:19:08.340

Modified: 2026-11-07T18:17:27.803

Link: CVE-2026-76490

cve-icon Redhat

No data.