CVE-2026-20316 Cisco Secure Firewall Management Center Use of Hard-coded Password
An unauthenticated attacker can log in using static low-privileged credentials to access sensitive data in Cisco Secure Firewall Management Center.
- Exploited in the wild
- Since 29 Jul 2026
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-20316?
CVE-2026-20316 is a medium-severity vulnerability in Cisco Secure Firewall Management Center, published on 29 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-259
Which versions are affected by CVE-2026-20316?
It affects 1 product.
Products include Cisco Secure Firewall Management Center.
How do I fix CVE-2026-20316?
No fix has been published for CVE-2026-20316 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 1 Aug 2026.
Is CVE-2026-20316 being exploited?
Yes. Attackers have exploited CVE-2026-20316 in the wild since at least 29 Jul 2026, including in ransomware campaigns.
Other vulnerabilities in Cisco Secure Firewall Management Center
- CVE-2026-20079 Cisco Firewall Management Center Authentication Bypass Using an Alternate Path or Channel
- CVE-2026-20131 Cisco Secure Firewall Management Center (FMC) Software and Cisco Security Cloud Control (SCC) Firewall Management Deserialization of Untrusted Data
- CVE-2025-20265 Cisco Secure Firewall Management Center Software Radius Remote Code Execution Vulnerability
- CVE-2024-20424 Command injection in Cisco Firepower Management Center
- CVE-2023-20048 Missing authorization in Cisco Firepower Management Center
Sources
Also known as GHSA-x85f-hvgg-4944.