CVE-2021-21786

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-07-07 · updated 2026-06-17
Weakness: CWE-782

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.

Affected products

IObit Advanced SystemCare Utimate: 14.2.0.220

References

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1253
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1253

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