All vulnerabilities
CVE-2026-20079

Cisco Firewall Management Center Authentication Bypass Using an Alternate Path or Channel Vulnerability

Cisco Secure Firewall Management Center (FMC) and Security Cloud Control (SCC) Firewall ManagementNetwork & edge
Open in ThreatlineRecord JSON
CVSS
10.0Critical
ExploitationExploited in the wildAdded to KEV 9 Sep 2026CISA KEV
Exploit odds (EPSS)88.5%Chance of exploitation activity in the next 30 days, higher than 99% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Federal deadline12 Sep 2026Remediation due date for US federal agenciesCISA KEV
CISA required actionApply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines. CISA KEV
Patching is not enoughCISA requires federal agencies to look for signs of compromise on affected systems, not only patch (forensic triage under BOD 26-04). Treat exposed systems as possibly compromised. CISA guidance

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Timeline

  1. 4 Mar 2026Exploit code publicMetasploit
  2. 4 Mar 2026, 17:17 UTCPublishedCVE List
  3. 9 Sep 2026Added to CISA KEVCISA KEV

Public exploit code and templates 2

  • Exploit moduleCisco Secure Firewall Management Center Authentication Bypass RCE 4 Mar 2026Metasploit
  • Scanner templateCisco Secure Firewall Management Center - Authentication BypassNuclei

Listed so defenders can prioritize. Threatline links to the source and does not host exploit code.

Description

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.

Text from CVE List

Affected versions 30

  • Cisco Secure Firewall Management Center (FMC)affected: 7.0.0CVE List
  • Cisco Secure Firewall Management Center (FMC)affected: 7.0.0.1CVE List
  • Cisco Secure Firewall Management Center (FMC)affected: 7.0.1CVE List
  • Cisco Secure Firewall Management Center (FMC)affected: 7.1.0CVE List
  • Cisco Secure Firewall Management Center (FMC)affected: 7.0.1.1CVE List
  • Cisco Secure Firewall Management Center (FMC)affected: 7.1.0.1CVE List
  • Cisco Secure Firewall Management Center (FMC)affected: 7.0.2CVE List
  • Cisco Secure Firewall Management Center (FMC)affected: 7.2.0CVE List
  • Cisco Secure Firewall Management Center (FMC)affected: 7.0.2.1CVE List
  • Cisco Secure Firewall Management Center (FMC)affected: 7.0.3CVE List
  • Cisco Secure Firewall Management Center (FMC)affected: 7.1.0.2CVE List
  • Cisco Secure Firewall Management Center (FMC)affected: 7.2.0.1CVE List
  • Cisco Secure Firewall Management Center (FMC)affected: 7.0.4CVE List
  • Cisco Secure Firewall Management Center (FMC)affected: 7.2.1CVE List
  • Cisco Secure Firewall Management Center (FMC)affected: 7.0.5CVE List
  • Cisco Secure Firewall Management Center (FMC)affected: 7.3.0CVE List
  • Cisco Secure Firewall Management Center (FMC)affected: 7.2.2CVE List
  • Cisco Secure Firewall Management Center (FMC)affected: 7.3.1CVE List
  • Cisco Secure Firewall Management Center (FMC)affected: 7.2.3CVE List
  • Cisco Secure Firewall Management Center (FMC)affected: 7.1.0.3CVE List
  • Cisco Secure Firewall Management Center (FMC)affected: 7.2.3.1CVE List
  • Cisco Secure Firewall Management Center (FMC)affected: 7.2.4CVE List
  • Cisco Secure Firewall Management Center (FMC)affected: 7.0.6CVE List
  • Cisco Secure Firewall Management Center (FMC)affected: 7.2.4.1CVE List
  • Cisco Secure Firewall Management Center (FMC)affected: 7.2.5CVE List
  • Cisco Secure Firewall Management Center (FMC)affected: 7.3.1.1CVE List
  • Cisco Secure Firewall Management Center (FMC)affected: 7.4.0CVE List
  • Cisco Secure Firewall Management Center (FMC)affected: 7.0.6.1CVE List
  • Cisco Secure Firewall Management Center (FMC)affected: 7.2.5.1CVE List
  • Cisco Secure Firewall Management Center (FMC)affected: 7.4.1CVE List

References 4