CVE-2026-76491: Cisco Expressway Series Software Hardening Release: October 2026 - Denial of Service Vulnerabilities
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-2026-76491 are related to issues concerning reachable assertions that are grouped under the Common Weakness Enumeration (CWE) Base CWE-617.
Affected Software
Event History
Frequently Asked Questions
What access does an attacker need to exploit this issue?
The CVSS vector indicates it is network-reachable, requires no privileges, and does not require user interaction. Exploitation is rated low complexity.
What is the expected impact if exploited?
The reported impact is denial of service, with high availability impact. The CVSS vector reports no confidentiality or integrity impact.