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Cisco Secure Firewall Management Center Software Java Deserialization Remote Code Execution Vulnerability

Source: cisco / cisco-sa-fmc-javarce-y2NypXwk — original advisory

Published: 2026-09-16 · Last updated: 2026-09-16 · Vendor severity: Critical

CVEs

CVECVSSCWEExploitation
CVE-2026-20242 9.8 CWE-502: Deserialization of Untrusted Data Not observed in the wild

Affected Products

ProductAffected versionsFixed version
Cisco Secure Firewall Management Center (FMC) 10.0.0 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 10.0.1 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.0.0 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.0.0.1 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.0.1 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.0.1.1 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.0.2 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.0.2.1 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.0.3 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.0.4 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.0.5 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.0.6 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.0.6.1 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.0.6.2 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.0.6.3 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.0.7 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.0.8 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.0.8.1 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.0.9 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.2.0 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.2.0.1 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.2.1 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.2.10 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.2.10.1 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.2.10.2 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.2.11 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.2.2 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.2.3 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.2.3.1 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.2.4 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.2.4.1 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.2.5 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.2.5.1 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.2.5.2 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.2.6 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.2.7 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.2.8 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.2.8.1 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.2.9 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.3.0 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.3.1 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.3.1.1 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.3.1.2 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.4.0 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.4.1 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.4.1.1 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.4.2 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.4.2.1 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.4.2.2 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.4.2.3 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.4.2.4 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.4.3 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.4.4 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.4.5 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.4.6 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.4.7 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.6.0 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.6.1 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.6.2 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.6.2.1 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.6.3 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.6.4 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.6.5 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.7.0 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.7.10 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.7.10.1 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.7.11 Not specified by vendor Not specified by vendor
Cisco Secure Firewall Management Center (FMC) 7.7.12 Not specified by vendor Not specified by vendor