CVE-2026-20056
published 2026-02-04CVE-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…
PriorityP423medium4CVSS 3.1
AVNACHPRNUINSCCNILAN
EPSS
0.14%
3.8th percentile
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.
Affected
61 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| cisco | cisco_secure_web_appliance | — | — |
| cisco | cisco_secure_web_appliance | — | — |
| cisco | cisco_secure_web_appliance | — | — |
| cisco | cisco_secure_web_appliance | — | — |
| cisco | cisco_secure_web_appliance | — | — |
| cisco | cisco_secure_web_appliance | — | — |
| cisco | cisco_secure_web_appliance | — | — |
| cisco | cisco_secure_web_appliance | — | — |
| cisco | cisco_secure_web_appliance | — | — |
| cisco | cisco_secure_web_appliance | — | — |
| cisco | cisco_secure_web_appliance | — | — |
| cisco | cisco_secure_web_appliance | — | — |
| cisco | cisco_secure_web_appliance | — | — |
| cisco | cisco_secure_web_appliance | — | — |
| cisco | cisco_secure_web_appliance | — | — |
| cisco | cisco_secure_web_appliance | — | — |
| cisco | cisco_secure_web_appliance | — | — |
| cisco | cisco_secure_web_appliance | — | — |
| cisco | cisco_secure_web_appliance | — | — |
| cisco | cisco_secure_web_appliance | — | — |
| cisco | cisco_secure_web_appliance | — | — |
| cisco | cisco_secure_web_appliance | — | — |
| cisco | cisco_secure_web_appliance | — | — |
| cisco | cisco_secure_web_appliance | — | — |
| cisco | cisco_secure_web_appliance | — | — |
CVSS provenance
nvdv3.14.0MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N
vendor_cisco4.0MEDIUM
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Cisco
Cisco Secure Web Appliance Real-Time Scanning Archive File Bypass Vulnerability
vendor_cisco·2026-02-04·CVSS 4.0
CVE-2026-20056 [MEDIUM] CWE-494 Cisco Secure Web Appliance Real-Time Scanning Archive File Bypass Vulnerability
Cisco Secure Web Appliance Real-Time Scanning Archive File Bypass Vulnerability
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 malic
Cisco
Cisco Secure Web Appliance Real-Time Scanning Archive File Bypass Vulnerability
vendor_cisco·CVSS 3.1
CVE-2026-20056 Cisco Secure Web Appliance Real-Time Scanning Archive File Bypass Vulnerability
CVE-2026-20056: Cisco Secure Web Appliance Real-Time Scanning Archive File Bypass Vulnerability
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 laun
GHSA
GHSA-5v8r-9wmj-294x: A vulnerability in the Dynamic Vectoring and Streaming (DVS) Engine implementation of Cisco AsyncOS Software for Cisco Secure Web Appliance could allo
ghsa_unreviewed·2026-02-04
CVE-2026-20056 [MEDIUM] CWE-494 GHSA-5v8r-9wmj-294x: A vulnerability in the Dynamic Vectoring and Streaming (DVS) Engine implementation of Cisco AsyncOS Software for Cisco Secure Web Appliance could allo
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.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-02-04
Published