Iobit Advanced Systemcare Ultimate
A privilege escalation issue exists due to the way the driver handles Privileged I/O write requests. Specifically, during the `IOCTL 0x9c40a0dc` operation, the first dword in the input buffer specifies the device port to write to, and the word at offset 4 is the value to write via the `OUT` instruction. This allows writing one byte to the given I/O device port, potentially leading to escalated privileges for unprivileged users. A local attacker can exploit this by sending a malicious IRP.