What is CVE-2026-20056?

CVE-2026-20056 is a medium-severity vulnerability in Cisco Secure Web Appliance, classified under Download of Code Without Integrity Check. CVSS score: 4.0/10. Published 2026-02-04.

How severe is CVE-2026-20056?

Medium severity. CVSS v3 base score is 4.0 out of 10.

Vulnerability in Cisco Secure Web Appliance

CVE-2026-20056

A vulnerability in the Dynamic Vectoring and Streaming (DVS) Engine implementation of Cisco AsyncOS Software for Cisco Secure Web Appliance could allow an unauthenticated, remote attacker to bypass the anti-malware scanner, allowing malici…

EPSS: 0.000 (6.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.0 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N.

Affected products

Cisco Secure Web Appliance — versions 11.8.0-453, 12.5.3-002, 12.0.3-007

Weakness classification (CWE)

CWE-494 — Download of Code Without Integrity Check

References

cisco-sa-wsa-archive-bypass-Scx2e8zF

Frequently asked questions

What is CVE-2026-20056?: CVE-2026-20056 is a medium-severity vulnerability in Cisco Secure Web Appliance, classified under Download of Code Without Integrity Check. CVSS score: 4.0/10. Published 2026-02-04.
How severe is CVE-2026-20056?: Medium severity. CVSS v3 base score is 4.0 out of 10.