CVE-2016-6469: A vulnerability in HTTP URL parsing of Cisco AsyncOS for Cisco Web Security Appliance (WSA) could allow an...

Security readout for executives and security teams

Cisco Web Security Appliance versions running the listed AsyncOS releases can have their proxy process restarted by crafted HTTP URL parsing. That can interrupt web access through the appliance. The source bundle names fixed releases, but provides no CVSS score or proof of active exploitation. Exposure is limited to organizations operating Cisco Web Security Appliance with the listed affected AsyncOS releases. Internet or broad internal reachability to WSA proxy services would increase operational impact. Treat as a service availability risk for web filtering infrastructure. It is not described as data compromise, but outages can disrupt business internet access and security inspection. Mitigation focus: Upgrade affected WSA appliances to 10.1.0-129, 9.1.2-010, or later vendor-approved fixed releases.; Review Cisco advisory cisco-sa-20161207-wsa and CSCvb04312 for current vendor guidance.; Prioritize appliances that handle critical outbound web access or have broad untrusted client reachability..

Prepared

Jun 13, 2026, 13:16 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.