Vulnerability in Cisco Secure Firewall Threat Defense (Ftd) Software
CVE-2026-20065
Multiple Cisco products are affected by a vulnerability in the Snort 3 Detection Engine that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart, resulting in an interruption of packet inspectio…
EPSS: 0.000 (10.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L.
Affected products
- Cisco Secure Firewall Threat Defense (Ftd) Software — versions 7.0.0, 7.0.0.1, 7.0.1
- Cisco Utd Snort Ips Engine Software — versions 17.3.1a, 17.2.1r, 17.3.2
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-20065?
- CVE-2026-20065 is a medium-severity vulnerability in Cisco Secure Firewall Threat Defense (Ftd) Software, classified under Improper Locking. CVSS score: 5.8/10. Published 2026-03-04.
- How severe is CVE-2026-20065?
- Medium severity. CVSS v3 base score is 5.8 out of 10.