What is CVE-2026-20006?

CVE-2026-20006 is a medium-severity vulnerability in Cisco Secure Firewall Threat Defense (Ftd) Software, classified under CWE-388. CVSS score: 5.8/10. Published 2026-03-04.

How severe is CVE-2026-20006?

Medium severity. CVSS v3 base score is 5.8 out of 10.

Vulnerability in Cisco Secure Firewall Threat Defense (Ftd) Software

CVE-2026-20006

A vulnerability in the TLS cryptography functionality of the Snort 3 Detection Engine of Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to unexpecte…

EPSS: 0.001 (33.8th 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 7.2.0, 7.2.0.1, 7.2.1

Weakness classification (CWE)

CWE-388

References

cisco-sa-ftd-tcp-dos-rHfqnwRg

Frequently asked questions

What is CVE-2026-20006?: CVE-2026-20006 is a medium-severity vulnerability in Cisco Secure Firewall Threat Defense (Ftd) Software, classified under CWE-388. CVSS score: 5.8/10. Published 2026-03-04.
How severe is CVE-2026-20006?: Medium severity. CVSS v3 base score is 5.8 out of 10.