https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-04T12:21:14.143288+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/bdu:2021-06083 bdu:2021-06083 2026-10-04T12:21:14.225614+00:00 bdu:2021-06083 https://cve.radiocsirt.org/vuln/euvd-2026-168010 EUVD-2026-168010 2026-10-04T12:21:14.225653+00:00 EUVD-2026-168010 https://cve.radiocsirt.org/vuln/fkie_cve-2020-12526 fkie_cve-2020-12526 2026-10-04T12:21:14.225667+00:00

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.

 https://cve.radiocsirt.org/vuln/ghsa-53xf-f462-gx5v GHSA-53xf-f462-gx5v 2026-10-04T12:21:14.225701+00:00

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.

 https://cve.radiocsirt.org/vuln/gsd-2020-12526 gsd-2020-12526 2026-10-04T12:21:14.225719+00:00 gsd-2020-12526 https://cve.radiocsirt.org/vuln/vde-2020-051 VDE-2020-051 — Beckhoff: DoS-Vulnerability for TwinCAT OPC UA Server and IPC Diagnostics UA Server 2026-10-04T12:21:14.225730+00:00

Some TwinCAT OPC UA Server and IPC Diagnostics UA Server versions 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.

UPDATE A - 11.05.2021

Please note that some hardware products from Beckhoff are shipped with a TwinCAT OPC UA Server pre-installed. In some cases the server is enabled by default.

IPC Diagnostics UA Server (contained in Beckhoff's Windows images)

server versions up to and including 3.1.0.1 are affected Please note that IPC products from Beckhoff are shipped with an IPC Diagnostics UA Server pre-installed. In all cases the server is disabled by default. The version numbers named above always refer to the version number which is accessible via OPC UA at the server via the standard OPC UA node /Objects/Server/ServerStatus/BuildInfo/SoftwareVersion and on Windows also as the file property "File version" of the file TcOpcUaServer.exe for TwinCAT OPC UA Server respectively the file DevMgrSvr-UA.exe for IPC Diagnostics UA Server.

UPDATE A - 11.05.2021

Please note that IPC products from Beckhoff are shipped with an IPC Diagnostics UA Server pre-installed. While on Windows CE it is disabled by default all other Windows images have it enabled by default.