Cisco Releases Patches for critical vulnerabilities in SD-WAN, IOS XE, and Secure Firewall Management Center (FMC)
Cisco has released security updates addressing 24 vulnerabilities across multiple enterprise products, including several critical-severity flaws affecting Catalyst SD-WAN, IOS XE, and Secure Firewall Management Center (FMC). The most severe vulnerability, CVE-2026-20079, impacts FMC and carries a CVSS score of 10.0, enabling unauthenticated remote attackers to bypass authentication and gain root-level access. Cisco has also disclosed critical flaws in IOS XE and Catalyst SD-WAN that could allow command injection, privilege escalation, and unauthorized access.