CVE-2026-20017
Cisco Secure FTD Software Authenticated Command Injection Vulnerability
Description
A vulnerability in the CLI of Cisco Secure FTD Software could allow an authenticated, local attacker to execute arbitrary commands on the underlying operating system as root. To exploit this vulnerability, the attacker must have valid administrative credentials on an affected device. This vulnerability is due to insufficient input validation of user-supplied command arguments. An attacker could exploit this vulnerability by submitting crafted input for a specific CLI command. A successful exploit could allow the attacker to execute commands on the underlying operating system as root.
Weakness: CWE-250
Affected products
| Vendor | Product | Category | Matched by |
|---|---|---|---|
| Cisco | Cisco Firepower Threat Defense (FTD) Check your version | Firewall / NGFW | cna-assigner |
Vendor-reported products (1)
- Cisco · Cisco Secure Firewall Threat Defense (FTD) Software
Vendor advisory
Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Authenticated Command Injection Vulnerabilities
Cisco’s rating: Medium (advisory CVSS 6.5) · Published Mar 4, 2026
Bug IDs: CSCwo73885 , CSCwp81377 , CSCwq01519 , CSCwq01526
The vendor’s rating applies to the whole advisory and can differ from this CVE’s own CVSS severity. Where this comes from