CVE Vulnerability Advisory Database
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2026-03-04
Cisco Secure Firewall Management Center (FMC) Insecure Deserialization Vulnerability (CVE-2026-20131, CVSS 10.0) - Remote Code Execution and Root Privilege Escalation
[Affected Scope] Web-based management interface of Cisco Secure Firewall Management Center (FMC) Software.
[Impact] Unauthenticated, remote attackers can execute arbitrary Java code with root privileges by sending crafted serialized Java objects.
[Mitigation] Apply official Cisco security patches immediately and restrict public internet access to the FMC management interface.