CVE-2021-21789

2021-07-07T17:15:00
ID CVE-2021-21789
Type cve
Reporter talos-cna@cisco.com
Modified 2022-04-28T17:15:00

Description

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 0x9c40a0e0, the first dword passed in the input buffer is the device port to write to and the dword at offset 4 is the value to write via the OUT instruction. A local attacker can send a malicious IRP to trigger this vulnerability.