The issue concerns the mdare64 48.sys, mdare32 48.sys, mdare32 52.sys, mdare64 52.sys, and Fortishield.sys drivers in FortiClient. These drivers do not properly restrict access to the API for management of processes and the Windows registry. This allows local users to obtain a privileged handle to a PID, which may have unspecified other impacts. An example of exploitation is a 0x2220c8 ioctl call.