Cisco CVE-2026-76461 Added to CISA KEV Under Active Exploitation
Key findings • CISA added Cisco CVE-2026-76461 to its KEV catalog on September 14, 2026. • The vulnerability is confirmed to be under active exploitation by threat actors. • Federal agenc…
Key findings
- CISA added Cisco CVE-2026-76461 to its KEV catalog on September 14, 2026.
- The vulnerability is confirmed to be under active exploitation by threat actors.
- Federal agencies must remediate this flaw by March 13, 2027.
- All organizations using affected Cisco products should patch immediately.
CISA has issued an urgent alert by adding a critical Cisco vulnerability, CVE-2026-76461, to its Known Exploited Vulnerabilities (KEV) Catalog. This inclusion on September 14, 2026, signifies that the flaw is no longer theoretical but has been actively leveraged by malicious actors in real-world attacks. The addition of any vulnerability to the KEV catalog elevates its status to an immediate and severe threat, demanding prompt attention from all organizations.
CVE-2026-76461, while specific details of its nature are not publicly elaborated beyond its identifier, represents a significant security risk within Cisco's product ecosystem. Its presence in the KEV catalog confirms that threat actors have successfully developed and deployed exploits targeting this vulnerability, making any unpatched systems highly susceptible to compromise. Organizations utilizing affected Cisco products should consider this a direct call to action.
The CISA KEV catalog serves as a definitive list of vulnerabilities that pose a current and significant risk to federal enterprise networks. For federal civilian executive branch (FCEB) agencies, remediation of KEV-listed vulnerabilities is a mandatory requirement, with specific deadlines for compliance. The deadline for CVE-2026-76461 will be March 13, 2027, six months from its addition date.
Beyond federal mandates, the active exploitation status of CVE-2026-76461 means that all organizations, regardless of sector, face an elevated risk. Defenders are strongly advised to identify all instances of affected Cisco products within their environments and apply the necessary patches or mitigations without delay. Prioritizing the remediation of KEV-listed vulnerabilities is a cornerstone of effective cybersecurity posture, as these flaws are proven entry points for adversaries.