701 Client is the user interface software for the access control system. It is used for adding and deleting tokens, setting door groups for access, setting time zones for limiting access and monitoring ingress and egress on a live system, among other things.
The application 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 'F' flag (Full) for 'Authenticated Users' group.