Is CVE-2011-3486 being actively exploited?

CVE-2011-3486 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2011-3486?

CVE-2011-3486 has a CVSS 2.0 base score of 5.0 (MEDIUM).

CVE-2011-3486

MEDIUM · CVSS 5.0EPSS 49.6%EU EUVD

Beckhoff TwinCAT 2.11.0.2004 and earlier allows remote attackers to cause a denial of service via a crafted request to UDP port 48899, which triggers an out-of-bounds read.

Key facts

CVSS score: 5.0 (v2.0)
Severity: MEDIUM
CVSS vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness (CWE): CWE-119
EPSS score: 49.6% (99th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2011-3449)
Published: September 16, 2011
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2011-3449 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

beckhoff / twincat
beckhoff / twincat
beckhoff / twincat
beckhoff / twincat
beckhoff / twincat

References

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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