Vulnerabilities CVE-2026-20131

CVE-2026-20131

Medium

Open

KEV

TLP:CLEAR

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

NVD CVE.org

Critical Infrastructure

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Description

Cisco — Secure Firewall Management Center (FMC) — 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.

Details

EPSS Score ⓘ: 31.23%

98.1th percentile
Confidence: 100%
CISA KEV
Date Added: Mar 19, 2026
Patch Due: Mar 22, 2026
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.

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