Vulnerability in Cisco Secure Firewall Threat Defense (Ftd) Software
CVE-2026-20017
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.0 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.002 (4.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 4th percentile — 4.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Cisco Secure Firewall Threat Defense (Ftd) Software — versions 6.4.0.1, 6.4.0.2, 6.4.0.5
- Cisco Firepower Threat Defense — versions 7.2.10.2
- Cisco Secure Firewall Threat Defense — versions 7.2.10.2
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-20017?
- CVE-2026-20017 is a medium-severity vulnerability in Cisco Secure Firewall Threat Defense (Ftd) Software, classified under CWE-250. CVSS score: 6.0/10. Published 2026-03-04.
- How severe is CVE-2026-20017?
- Medium severity. CVSS v3 base score is 6.0 out of 10.