em4 is more than just a nano-PLC. It is a leading edge device supported by best-in-class tools that enables you to create and implement the smartest automation applications. Millenium 3 (M3) is easy to program and to implement, it enables the control and monitoring of machines and automation installations with up to 50 I/O. It is positioned right at the heart of the Crouzet Automation range.
em4 soft and M3 soft suffers from an elevation of privileges vulnerability which can be used by a simple authenticated user that can change the executable file with a binary of choice. The vulnerability exist due to the improper permissions, with the 'C' flag (Change) for 'Everyone' group.