CVE-2011-4500

Name: CVE-2011-4500
Creator: NVD / NIST
Published: 2011-11-22T11:55:04.793+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.43%

Last modified Jun 16, 2026

CVE-2011-4500 is a vulnerability of currently unknown severity. The UPnP IGD implementation on the Cisco Linksys WRT54GX with firmware 2.00.05, when UPnP is enabled, configures the SOAP server to listen on the WAN port, which allows remote attackers to administer the firewall via SOAP requests.. EPSS estimates a 1.43% chance of exploitation in the next 30 days.

Description

The UPnP IGD implementation on the Cisco Linksys WRT54GX with firmware 2.00.05, when UPnP is enabled, configures the SOAP server to listen on the WAN port, which allows remote attackers to administer the firewall via SOAP requests.

Metrics

EPSS Probability

1.43%

69.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-16

Affected Software

Vendor	Product	Versions
Cisco	Linksys Wrt54gx Router Firmware	2.00.05
Linksys	Wrt54gx	2.0

References

http://www.kb.cert.org/vuls/id/357851US Government Resource
http://www.upnp-hacks.org/devices.html
http://www.kb.cert.org/vuls/id/357851US Government Resource
http://www.upnp-hacks.org/devices.html

Timeline

Published: Nov 22, 2011
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2011-4500?

How severe is CVE-2011-4500?

Severity scoring for CVE-2011-4500 is pending analysis. The EPSS model estimates a 1.43% probability of exploitation in the next 30 days.

How do I fix CVE-2011-4500?

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-2011-4500?

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

Scan your code now

Source: NVD / NIST