CVE-2011-3486: Beckhoff Twincat

Medium severity, CVSS 5.0. EPSS: 49.7% chance of exploitation in the next 30 days.

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.

Affected products

• Beckhoff Twincat: up to and including 2.11.0.2004; version 2.7 only; version 2.8 only; version 2.9 only; version 2.10 only

Published 2011-09-16. Last modified 2026-06-16.