Beckhoff IPC Diagnostics before 1.8 does not properly restrict access to functions in /config, which allows remote attackers to cause a denial of service (reboot or shutdown), create arbitrary users, or possibly have unspecified other impact via a crafted request, as demonstrated by a beckhoff.com:service:cxconfig:1#Write SOAP action to /upnpisapi.

Beckhoff: Improper input neutralization vulnerability in the IPC-Diagnostics package in TwinCAT/BSD

The IPC-Diagnostics package in TwinCAT/BSD is susceptible to improper input neutralization by a low-privileged local attacker.

BECKHOFF: DoS-Vulnerability for TwinCAT OPC UA Server and IPC Diagnostics UA Server

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.

Beckhoff: Local authentication bypass in the IPC-Diagnostics package included in TwinCAT/BSD

The IPC-Diagnostics package included in TwinCAT/BSD is vulnerable to a local authentication bypass by a low privileged attacker.

Beckhoff: Local Denial-of-Service vulnerability in TwinCAT/BSD and the IPC-Diagnostics package

The IPC-Diagnostics package included in TwinCAT/BSD is vulnerable to a local denial-of-service attack by a low privileged attacker.