CVE-2026-76491
Cisco Expressway Series Software Hardening Release: October 2026 - Denial of Service 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. 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.
Weakness: CWE-617
Affected products
| Vendor | Product | Category | Matched by |
|---|---|---|---|
| Cisco | Cisco TelePresence | Other Products | cna-assigner |
Vendor-reported products (1)
- Cisco · Cisco TelePresence Video Communication Server (VCS) Expressway
Vendor advisory
cisco-sa-exwy-hardening-FhcqBVcs
Cisco Expressway Series Security Hardening Release: October 2026
Cisco’s rating: High (advisory CVSS 8.6) · Published Oct 21, 2026
The vendor’s rating applies to the whole advisory and can differ from this CVE’s own CVSS severity. Where this comes from