CVE-2011-4503

Severity: high (CVSS 7.5 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2011-11-22 · updated 2026-06-16
Weakness: CWE-16

Description

The UPnP IGD implementation in Broadcom Linux on the Sitecom WL-111 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.

Affected products

Broadcom Linux: all versions
Sitecom Wl-111: all versions

References

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

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