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5.8 Medium

CVE-2023-20215 A vulnerability in the scanning engines of Cisco AsyncOS Software for Cisco Secure Web Appliance could allow an…

Description

A vulnerability in the scanning engines of Cisco AsyncOS Software for Cisco Secure Web Appliance could allow an unauthenticated, remote attacker to bypass a configured rule, allowing traffic onto a network that should have been blocked. This vulnerability is due to improper detection of malicious traffic when the traffic is encoded with a specific content format. An attacker could exploit this vulnerability by using an affected device to connect to a malicious server and receiving crafted HTTP responses. A successful exploit could allow the attacker to bypass an explicit block rule and receive traffic that should have been rejected by the device.

Affected products and versions

Product Affected versions Fixed in
Cisco Secure Web Appliance 14.5 14.5.0-498 → 14.5.1-016 No fix stated
Cisco Secure Web Appliance 14.0 14.0.2-012 → 14.0.4-005 No fix stated
Cisco Secure Web Appliance 12.5 12.5.1-011 → 12.5.5-004 No fix stated
Cisco Secure Web Appliance 12.0 12.0.1-268 → 12.0.3-007 No fix stated
Cisco Secure Web Appliance 11.8 11.8.0-414 → 11.8.3-021 No fix stated
Cisco Secure Web Appliance 11.7 11.7.0-406 → 11.7.2-011 No fix stated

Other CVEs of Cisco Secure Web Appliance

The 15 CVEs of Cisco Secure Web Appliance →
CVE-2026-20152 A vulnerability in the authentication service feature of Cisco AsyncOS Software for Cisco Secure Web Appliance could… 5.3 Medium CVE-2026-20056 A vulnerability in the Dynamic Vectoring and Streaming (DVS) Engine implementation of Cisco AsyncOS Software for Cisco… 4.0 Medium CVE-2025-20207 A vulnerability in Simple Network Management Protocol (SNMP) polling for Cisco Secure Email and Web Manager, Cisco… 4.3 Medium CVE-2025-20185 A vulnerability in the implementation of the remote access functionality of Cisco AsyncOS Software for Cisco Secure… 3.4 Low
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