CVE-2026-20131 — Actively Exploited: Secure Firewall Management Center (FMC) (Cisco)
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 dev
| CVE ID | CVE-2026-20131 |
|---|---|
| Vendor | Cisco |
| Product | Secure Firewall Management Center (FMC) |
| Vulnerability name | Cisco Secure Firewall Management Center (FMC) Software and Cisco Security Cloud Control (SCC) Firewa |
| Date added | 2026-03-19 |
| Remediation due | 2026-03-22 |
| Known ransomware use | Known |
| 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. |
| 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. |
| Source | CISA Known Exploited Vulnerabilities |
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