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Case File

CVE-2011-4503

HIGH · CVSS 7.5 EPSS 2.09%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2011-11-22 · Last synced 2026-08-04

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CVE
CVE-2011-4503
Severity
HIGH
CVSS
7.5
EPSS
2.09%
Linux

Original NVD 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.