Skip to content
fr Sign in
5.3 Medium Exploited · ransomware

CVE-2026-20316 Cisco Secure Firewall Management Center Use of Hard-coded Password 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 Known to be used
Weakness CWE-259

Description

A vulnerability in the web interface of Cisco Secure Firewall Management Center (FMC) Software could allow an unauthenticated, remote attacker to log in to an affected device using a low-privileged account to access sensitive data within the impacted systems. This vulnerability is due to the presence of static user credentials for a low-privileged account. An attacker could exploit this vulnerability by using the account to log in to an affected system. A successful exploit could allow the attacker to log in to the affected system and access sensitive data as the low-privileged user.  Note: If the FMC management interface does not have public internet access, the attack surface that is associated with this vulnerability is reduced.   Cisco has assigned this security advisory a Security Impact Rating (SIR) of High rather than Medium as the score indicates. The reason is that this vulnerability can be used with other Cisco Secure FMC Software vulnerabilities to elevate privileges.

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) 7.0 7.0.0 → 7.0.9 No fix stated

References

Timeline

  1. Published
  2. Added to the KEV catalogue
  3. Last modified

Other CVEs of Cisco Secure Firewall Management Center (FMC)

The 29 CVEs of Cisco Secure Firewall Management Center (FMC) →
CVE-2026-20342 A vulnerability in a specific file download API of Cisco Secure FMC Software could allow an authenticated, remote… 7.7 High CVE-2026-20323 A vulnerability in the sftunnel inter-device communication protocol of Cisco Secure FMC Software and Cisco Secure FTD… 8.3 High CVE-2026-76412 A vulnerability in the remote diagnostics debugger of Cisco Secure FMC Software could allow an authenticated, remote… 8.5 High CVE-2026-20333 As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Adaptive Security… 8.8 High
Track this CVE