CVE-2021-21791

MediumCVSS 5.5/10Last modified Jun 17, 2026

Description

An information disclosure vulnerability exists in the the way IOBit Advanced SystemCare Ultimate 14.2.0.220 driver handles Privileged I/O read requests. A specially crafted I/O request packet (IRP) can lead to privileged reads in the context of a driver which can result in sensitive information disclosure from the kernel. The IN instruction can read two bytes from the given I/O device, potentially leaking sensitive device data to unprivileged users.

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

CWE-782

Affected software

No affected versions have been published.

Timeline

Published: Aug 5, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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