Security Advisory

CVE-2020-12526

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2021-05-13 13:45:24

Last updated 2024-09-16 18:29:21

Assigner CERTVDE

State PUBLISHED

Description

TwinCAT OPC UA Server in versions up to 2.3.0.12 and IPC Diagnostics UA Server in versions up to 3.1.0.1 from Beckhoff Automation GmbH & Co. KG are vulnerable to denial of service attacks. The attacker needs to send several specifically crafted requests to the running OPC UA server. After some of these requests the OPC UA server is no longer responsive to any client. This is without effect to the real-time functionality of IPCs.

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