Firetruck

CVE-2026-20131

KEV · Ransomware

Cisco Secure Firewall Management Center (FMC) Software and Cisco Security Cloud Control (SCC) Firewall Management Deserialization of Untrusted Data Vulnerability

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Vendor / Project
Cisco
Product
Secure Firewall Management Center (FMC)
Date added
Mar 19, 2026
Due date
Mar 22, 2026
Known ransomware use
Known
CWEs
CWE-502

Description

Cisco Secure Firewall Management Center (FMC) Software and Cisco Security Cloud Control (SCC) Firewall Management contain a deserialization of untrusted data vulnerability in the web-based management interface that could allow an unauthenticated, remote attacker to execute arbitrary Java code as root on an affected device.

Required action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Notes