CVE-2026-20056 (GCVE-0-2026-20056)

Vulnerability from cvelistv5 – Published: 2026-02-04 16:11 – Updated: 2026-02-04 16:40
VLAI?
Title
Cisco Secure Web Appliance TBD Bypass Vulnerability
Summary
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 malicious archive files to be downloaded. This vulnerability is due to improper handling of certain archive files. An attacker could exploit this vulnerability by sending a crafted archive file, which should be blocked, through an affected device. A successful exploit could allow the attacker to bypass the anti-malware scanner and download malware onto an end user workstation. The downloaded malware will not automatically execute unless the end user extracts and launches the malicious file. 
CWE
  • CWE-494 - Download of Code Without Integrity Check
Assigner
Impacted products
Vendor Product Version
Cisco Cisco Secure Web Appliance Affected: 11.8.0-453
Affected: 12.5.3-002
Affected: 12.0.3-007
Affected: 12.0.3-005
Affected: 14.1.0-032
Affected: 14.1.0-047
Affected: 14.1.0-041
Affected: 12.0.4-002
Affected: 14.0.2-012
Affected: 11.8.0-414
Affected: 12.0.1-268
Affected: 11.8.1-023
Affected: 11.8.3-021
Affected: 11.8.3-018
Affected: 12.5.1-011
Affected: 11.8.4-004
Affected: 12.5.2-007
Affected: 12.5.2-011
Affected: 14.5.0-498
Affected: 12.5.4-005
Affected: 12.5.4-011
Affected: 12.0.5-011
Affected: 14.0.3-014
Affected: 12.5.5-004
Affected: 12.5.5-005
Affected: 12.5.5-008
Affected: 14.0.4-005
Affected: 14.5.1-008
Affected: 14.5.1-016
Affected: 15.0.0-355
Affected: 15.0.0-322
Affected: 12.5.6-008
Affected: 15.1.0-287
Affected: 14.5.2-011
Affected: 15.2.0-116
Affected: 14.0.5-007
Affected: 15.2.0-164
Affected: 14.5.1-510
Affected: 12.0.2-012
Affected: 12.0.2-004
Affected: 14.5.1-607
Affected: 14.5.3-033
Affected: 15.0.1-004
Affected: 15.2.1-011
Affected: 14.5.0-673
Affected: 14.5.0-537
Affected: 12.0.1-334
Affected: 14.0.1-503
Affected: 14.0.1-053
Affected: 11.8.0-429
Affected: 14.0.1-040
Affected: 14.0.1-014
Affected: 12.5.1-043
Affected: 15.2.2-009
Affected: 15.5.0-566
Affected: 15.2.3-007
Affected: 15.5.0-574
Affected: 15.5.0-710
Affected: 15.2.4-022
Affected: 15.5.1-002
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