CVE-2026-20044
Cisco Secure Firewall Management Center Command Injection Vulnerability
Description
A vulnerability in the lockdown mechanism of Cisco Secure Firewall Management Center (FMC) Software could allow an authenticated, local attacker to perform arbitrary commands as root. This vulnerability is due to insufficient restrictions on remediation modules while in lockdown mode. An attacker could exploit this vulnerability by sending crafted input to the system CLI of the affected device. A successful exploit could allow the attacker to run arbitrary commands or code as root, even when the system is in lockdown mode. To exploit this vulnerability, the attacker must have valid administrative credentials.
Weakness: CWE-269
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-cmd-inject-S9ZM4EJf
Cisco Secure Firewall Management Center Software Command Injection Vulnerability
Cisco’s rating: Medium (advisory CVSS 6.0) · Published Mar 4, 2026
Bug ID: CSCwq23375
The vendor’s rating applies to the whole advisory and can differ from this CVE’s own CVSS severity. Where this comes from