High severity7.8NVD Advisory· Published Jul 7, 2021· Updated Jun 17, 2026
CVE-2021-21786
CVE-2021-21786
Description
A privilege escalation vulnerability exists in the IOCTL 0x9c406144 handling of IOBit Advanced SystemCare Ultimate 14.2.0.220. A specially crafted I/O request packet (IRP) can lead to increased privileges. An attacker can send a malicious IRP to trigger this vulnerability.
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Affected products
3- cpe:2.3:a:iobit:advanced_systemcare_ultimate:14.2.0.220:*:*:*:*:*:*:*
- IOBit/Advanced SystemCare Ultimatedescription
- Range: =14.2.0.220
Patches
Vulnerability mechanics
References
1- talosintelligence.com/vulnerability_reports/TALOS-2021-1253nvdExploitThird Party Advisory
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