Lenovo laptops, including ThinkPad and Yoga models, are vulnerable to a privilege elevation bug in the ImControllerService service allowing attackers to execute commands with admin privileges.
The flaws are tracked as CVE-2021-3922 and CVE-2021-3969 and affect the ImControllerService component of all Lenovo System Interface Foundation versions below 1.1.20.3. When viewing the Windows services screen, this service has a display name of “System Interface Foundation Service.”
The particular service is a component of Lenovo System Interface Foundation, which helps Lenovo devices communicate with universal apps like Lenovo Companion, Lenovo Settings, and Lenovo ID. The service is preinstalled by default on numerous Lenovo Models, including Yoga and ThinkPad devices.