CVE-2026-20056
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
04/02/2026
Last modified:
04/02/2026
Description
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.<br />
<br />
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.&nbsp;
Impact
Base Score 3.x
4.00
Severity 3.x
MEDIUM