CVE-2026-20316
Cisco Secure Firewall Management Center Software Static Credential Vulnerability
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
Affected products
| Vendor | Product | Category | Matched by |
|---|---|---|---|
| Cisco | Cisco Secure Firewall Management Center Check your version | Network & Security Management | cna-assigner |
Vendor-reported products (1)
- Cisco · Cisco Secure Firewall Management Center (FMC)
Vendor advisory
cisco-sa-fmc-static-cred-BET3Cjh
Cisco Secure Firewall Management Center Software Static Credential Vulnerability
Cisco’s rating: High (advisory CVSS 5.3) · Published Jul 29, 2026 · updated Sep 16, 2026 (revision 1.6)
Bug ID: CSCwt95997
The vendor’s rating applies to the whole advisory and can differ from this CVE’s own CVSS severity. Where this comes from