The vulnerability of microprogrammed software in Modicon, ATV IMC, and PacDrive programmable logic controllers lies in the lack of authentication for a critical function, allowing an intruder to alter the device’s configuration.

The vulnerability of microprogrammed software in Modicon, ATV IMC, and PacDrive programmable logic controllers is related to the absence of authentication for the critical function. Exploiting this vulnerability allows a malicious actor to remotely alter the device’s configuration IP address,...