The vulnerability of HID Mercury programmable logic controllers’ microprogramming software lies in the copying of buffers without checking the size of the input data. This allows a malicious actor to cause malfunctions in the system.

The vulnerability of HID Mercury programmable logic controllers’ microprogramming software lies in the copying of buffers without checking the size of the input data. Exploiting this vulnerability can allow an attacker, operating remotely, to cause a service failure through a specially crafted HT...