HIGHVulnerability
Verified
Global

CISA KEV: Cisco Secure Firewall Management Center (FMC) and Security Cloud Control (SCC) Firewall Management — Cisco Firewall Management Center Authentication Bypass Using an Alternate Path or Channel Vulnerability

·Source: CISA KEV

Updated:

Executive Summary

Cisco Secure Firewall Management Center (FMC) Software and Cisco Security Cloud Control (SCC) Firewall Management contain an authentication Bypass using an alternate path or channel vulnerability that could allow an unauthenticated, remote attacker to bypass authentication and execute script files on an affected device to obtain root access to the underlying operating system.

Analysis

Cisco Secure Firewall Management Center (FMC) Software and Cisco Security Cloud Control (SCC) Firewall Management contain an authentication Bypass using an alternate path or channel vulnerability that could allow an unauthenticated, remote attacker to bypass authentication and execute script files on an affected device to obtain root access to the underlying operating system. Added to CISA Known Exploited Vulnerabilities catalog on 2026-09-09. Remediation due: 2026-09-12.

Indicators of Compromise (1)

CVE (1)
CVE-2026-20079
NVDMITRE CVE
Source Attribution

Originally published by CISA KEV on Sep 9, 2026. Verified by: CISA.

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