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

Critical Listed in CISA KEV
CVECVE-2026-20131
First seen2026-03-19 00:00 UTC
Disclosed2026-03-19 00:00 UTC
Last updated2026-07-14 19:45 UTC
Channel statuspending_review

Summary

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.

In-depth triage · Auto channel

No in-depth report has been generated yet (DR-003 v2 AI pipeline is under construction).

Affected products

  • Cisco:Secure Firewall Management Center (FMC)

Sources

  • CISA KEV DATABASE

Original Links

Timeline

  1. kev_added CISA KEV
  2. kev_ingest CISA KEV