CVE-2013-5537

high

Published 2013-10-24 · Modified 2026-04-29

CVSS v3

—

CVSS v2

7.8

VIR risk

7.8

Description

The web framework on Cisco Web Security Appliance (WSA), Email Security Appliance (ESA), and Content Security Management Appliance (SMA) devices does not properly manage the state of HTTP and HTTPS sessions, which allows remote attackers to cause a denial of service (management GUI outage) via multiple TCP connections, aka Bug IDs CSCuj59411, CSCuf89818, and CSCuh05635.

Predictions

Exploit likelihood

20%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: psirt@cisco.com — http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-5537

References

http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-5537
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2013-5537

CWEs

CWE-20

Verify integrity in audit chain (admin only). AS-IS.