Vulnerability in Cisco Adaptive_security_appliance_software

CVE-2026-20069

A vulnerability in the VPN web services component of Cisco Secure Firewall Adaptive Security Appliance (ASA) Software and Cisco Secure Firewall Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to conduct browse…

Vulnerability class: HTTP Request Smuggling

EPSS: 0.000 (1.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-20069?
CVE-2026-20069 is a medium-severity vulnerability in Cisco Adaptive_security_appliance_software, classified under Inconsistent Interpretation of HTTP Requests (HTTP Request/Response Smuggling). CVSS score: 4.3/10. Published 2026-03-04.
How severe is CVE-2026-20069?
Medium severity. CVSS v3 base score is 4.3 out of 10.