CVE-2011-4499

no score yetEPSS 1.3%

No CVSS score yet. EPSS 1.3% chance of exploitation in the next 30 days.

The UPnP IGD implementation in the Broadcom UPnP stack on the Cisco Linksys WRT54G with firmware before 4.30.5, WRT54GS v1 through v3 with firmware before 4.71.1, and WRT54GS v4 with firmware before 1.06.1 allows remote attackers to establish arbitrary port mappings by sending a UPnP AddPortMapping action in a SOAP request to the WAN interface, related to an "external forwarding" vulnerability.

EPSS: 1.3% chance of exploitation in the next 30 days; higher than 70% of CVEs (scores of 2026-10-31)
CWE: CWE-16
Published: 2011-11-22
Modified: 2026-06-16
Record from: the NVD, synced 2026-10-19

Affected

cisco:linksys_wrt54g_router_firmware
cisco:linksys_wrt54gs_router_firmware
linksys:wrt54g
linksys:wrt54gs

References

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

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