Vulnerability in Cisco Campus Gateway Software

[ Why it matters ]Priority signals

• Critical severity: CVSS 9.6

[ Description ]Official description

As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco networking engineering team has conducted a comprehensive internal security review. This review resulted in a software hardening release that addresses multiple internally discovered vulnerabilities. The vulnerabilities tracked by this CVE-2026-76464 are related to buffer management issues that are grouped under the Common Weakness Enumeration (CWE) CWE-119.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• NCSC-NL9 Oct 2026NCSC-2026-0411

  Vulnerabilities fixed in Cisco networking products Translated from Dutch

  Probability/damage M/HCVE-2026-76463CVE-2026-76464CVE-2026-76467+4 more CVEs
• CERT-FR8 Oct 2026CERTFR-2026-AVI-1282

  Multiple vulnerabilities in Cisco products Translated from French

  Multiple vulnerabilities have been discovered in Cisco products. Some of them allow an attacker to cause remote arbitrary code execution, privilege escalation and remote denial of service.

  CVE-2026-76471CVE-2026-76455CVE-2026-76482+27 more CVEs
• BSI CERT-Bund7 Oct 2026WID-SEC-2026-3793

  Cisco Meraki (MR, MS and MX) and IOS XE: Multiple vulnerabilities Translated from German

  CVE-2026-76470CVE-2026-76464CVE-2026-76469+4 more CVEs

[ References ]References

• sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-hardenin…