Is CVE-2011-4501 in the CISA KEV catalog?

No. CVE-2011-4501 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2011-4501?

CVE-2011-4501 has a CVSS v2 base score of 10.0 (HIGH).

What is the EPSS score for CVE-2011-4501?

CVE-2011-4501 has an EPSS score of 4.45% (90th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2011-4501?

No published fix for CVE-2011-4501 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2011-4501

HIGHEPSS 90th pctl

10.0

CVSS v2

NVD

Description

The UPnP IGD implementation in Edimax EdiLinux on the Edimax BR-6104K with firmware before 3.25, Edimax 6114Wg, Canyon-Tech CN-WF512 with firmware 1.83, Canyon-Tech CN-WF514 with firmware 2.08, Sitecom WL-153 with firmware before 1.39, and Sweex LB000021 with firmware 3.15 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.

CWE-16

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

4.45%probability of exploitation in 30 days

90thpercentile

High risk: more likely to be exploited than 90% of all known CVEs.

References

Government Resource1

kb.cert.org

Other references2

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-29.