Riskcovery

CVE-2026-76491

Cisco Expressway Series Software Hardening Release: October 2026 - Denial of Service Vulnerabilities

State
Published
Severity
7.5 High
Published
Oct 21, 2026
Updated
Oct 22, 2026
Reserved
Aug 19, 2026

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.17.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hcisco

Weaknesses

Affected Products

ProductVersions
Cisco TelePresence Video Communication Server (VCS) ExpresswayCisco
  • X8.11.2Affected
  • X8.6Affected
  • X8.11.3Affected
  • X8.2.2Affected
  • X8.8.3Affected
  • X8.11.0Affected
  • X12.5.2Affected
  • X8.1.1Affected
  • X8.9Affected
  • X12.5.1Affected
  • X12.5.6Affected
  • X8.7.3Affected
  • X12.6.0Affected
  • X8.11.1Affected
  • X8.5Affected
  • X8.9.1Affected
  • X8.10.2Affected
  • X8.8.2Affected
  • X8.5.3Affected
  • X8.1Affected
  • X8.9.2Affected
  • X8.11.4Affected
  • X12.5.4Affected
  • X8.8.1Affected
  • X8.2.1Affected
  • and 69 more versions

References

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