CVE-2013-5537: The web framework on Cisco Web Security Appliance (WSA), Email Security Appliance (ESA), and Content Securi...

Security readout for executives and security teams

This CVE affects the management web interface on Cisco WSA, ESA, and SMA appliances. A remote attacker could disrupt the management GUI by abusing HTTP or HTTPS session handling. The described impact is an administrator-facing outage, not confirmed data theft or appliance traffic bypass. Exposure is likely limited to organizations running Cisco WSA, ESA, or SMA appliances with reachable management web interfaces. The source bundle does not identify affected software versions or CPEs, so product inventory and Cisco advisory review are required. Treat as a management-plane availability risk. Prioritize remediation for Internet-reachable or broadly accessible appliances, and for environments where inability to administer email, web, or content security appliances would delay incident response. Mitigation focus: Review Cisco’s CVE notice for affected releases and vendor remediation.; Restrict management GUI access to trusted admin networks or VPNs.; Remove HTTP/HTTPS management exposure from untrusted networks..

Prepared

Jun 14, 2026, 15:32 UTC (UTC+00:00)

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