CVE-2011-4500: Cisco Linksys WRT54GX Router Firmware
High severity, CVSS 7.5. EPSS: 1.3% chance of exploitation in the next 30 days.
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.
Affected products
Published 2011-11-22. Last modified 2026-06-16.