CVE-2021-21788
8.8
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Summary
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 0x9c40a0dc, the first dword passed in the input buffer is the device port to write to and the word 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. A local attacker can send a malicious IRP to trigger this vulnerability.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| n/a | Iobit | IOBit Advanced SystemCare Ultimate 14.2.0.220 | affected |
Weaknesses
- CWE-782: CWE-782: Exposed IOCTL with Insufficient Access Control
ADP Enrichment
CVE Program Container
Additional References
References
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