10.0
Critical
Exploited
CVE-2026-20079 Cisco Firewall Management Center Authentication Bypass Using an Alternate Path or Channel Vulnerability
Active exploitation observed
· CISA KEV catalogue
Required action
Apply 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.
Ransomware campaigns
Not observed so far
Weakness
CWE-288
Description
A vulnerability in the web interface of Cisco Secure Firewall Management Center (FMC) Software 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. This vulnerability is due to an improper system process that is created at boot time. An attacker could exploit this vulnerability by sending crafted HTTP requests to an affected device. A successful exploit could allow the attacker to execute a variety of scripts and commands that allow root access to the device.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Cisco Secure Firewall Management Center (FMC) 10.0 | 10.0.0 → 10.0.1 | No fix stated |
| Cisco Secure Firewall Management Center (FMC) 7.7 | 7.7.0 → 7.7.12 | No fix stated |
| Cisco Secure Firewall Management Center (FMC) 7.6 | 7.6.0 → 7.6.5 | No fix stated |
| Cisco Secure Firewall Management Center (FMC) 7.4 | 7.4.0 → 7.4.7 | No fix stated |
| Cisco Secure Firewall Management Center (FMC) 7.3 | 7.3.0 → 7.3.1.2 | No fix stated |
| Cisco Secure Firewall Management Center (FMC) 7.2 | 7.2.0 → 7.2.11 | No fix stated |
| Cisco Secure Firewall Management Center (FMC) 7.1 | 7.1.0 → 7.1.0.3 | No fix stated |
| Cisco Secure Firewall Management Center (FMC) 7.0 | 7.0.0 → 7.0.9 | No fix stated |
References
- cisco-sa-onprem-fmc-authbypass-5JPp45V2 sec.cloudapps.cisco.com
Timeline
- Published
- Added to the KEV catalogue
- Last modified
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