CVE-2013-5537

Name: CVE-2013-5537
Creator: NVD / NIST
Published: 2013-10-24T10:53:09.897+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.33%

Last modified Jun 16, 2026

CVE-2013-5537 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 1.33% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

1.33%

67.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Cisco	Web Security Appliance	All versions
Cisco	Content Security Management Appliance	All versions
Cisco	Email Security Appliance Firmware	All versions

References

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

Timeline

Published: Oct 24, 2013
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2013-5537?

How severe is CVE-2013-5537?

Severity scoring for CVE-2013-5537 is pending analysis. The EPSS model estimates a 1.33% probability of exploitation in the next 30 days.

How do I fix CVE-2013-5537?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2013-5537?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST