CVE-2017-6751: A vulnerability in the web proxy functionality of the Cisco Web Security Appliance (WSA) could allow an una...

Security readout for executives and security teams

CVE-2017-6751 lets an unauthenticated remote attacker abuse Cisco WSA web proxy behavior to forward traffic toward the appliance’s administrative management interface. In business terms, a security gateway could become a path to its own admin surface, weakening expected management isolation. Exposure is most likely for organizations running Cisco WSA virtual or hardware appliances on the listed affected releases, especially where web proxy access is available to untrusted clients. Confirm exposure against Cisco advisory CSCvd88863 and local appliance version data. Treat this as high priority if Cisco WSA is deployed. The issue affects a security control and may undermine administrative isolation. Absence from KEV lowers evidence of current exploitation, but remote unauthenticated access control bypass warrants prompt inventory and vendor-guided remediation. Mitigation focus: Review Cisco advisory cisco-sa-20170719-wsa5 and CSCvd88863 for fixed releases or workarounds.; Inventory all Cisco WSA virtual and hardware appliances and record exact software versions.; Prioritize upgrades for WSA releases 10.1.0-204 and 9.0.0-485 if present..

Prepared

Jun 12, 2026, 22:05 UTC (UTC+00:00)

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