CVE-2021-21786

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.

• CWE-782
• CWE-269

• https://talosintelligence.com/vulnerability_reports/TALOS-2021-1253Exploit, Third Party Advisory
• https://talosintelligence.com/vulnerability_reports/TALOS-2021-1253Exploit, Third Party Advisory

Published

Jul 7, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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