A privilege escalation vulnerability exists in the way IOBit Advanced SystemCare Ultimate 14.2.0.220 driver handles Privileged I/O write requests. During IOCTL 0x9c40a0d8, the first dword passed in the input buffer is the device port to write to and the byte at offset 4 is the value to write via the OUT instruction. The OUT instruction can write one byte to the given I/O device port, potentially leading to escalated privileges of unprivileged users.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Advanced_systemcare_ultimate | Iobit | 14.2.0.220 (including) | 14.2.0.220 (including) |