Kernel drivers in Beckhoff TwinCAT 3.1 Build 4022.4, TwinCAT 2.11 R3 2259, and TwinCAT 3.1 lack proper validation of user-supplied pointer values. An attacker who is able to execute code on the target may be able to exploit this vulnerability to obtain SYSTEM privileges.

Beckhoff TwinCAT supports communication over ADS. ADS is a protocol for industrial automation in protected environments. ADS has not been designed to achieve security purposes and therefore does not include any encryption algorithms because of their negative effect on performance and throughput. An attacker can forge arbitrary ADS packets when legitimate ADS traffic is observable.

Beckhoff TwinCAT 3 supports communication over ADS. ADS is a protocol for industrial automation in protected environments. This protocol uses user configured routes, that can be edited remotely via ADS. This special command supports encrypted authentication with username/password. The encryption uses a fixed key, that could be extracted by an attacker. Precondition of the exploitation of this weakness is network access at the moment a route is added.

Beckhoff: Local Denial of Service issue in package MDP included in TwinCAT/BSD

The MPD package included in TwinCAT/BSD allows an authenticated, low-privileged local attacker to induce a Denial-of-Service (DoS) condition on the daemon and execute code in the context of user “root” via a crafted HTTP request.

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.