VULNERABILITY INTELLIGENCE

CVE-2021-21791

CVSS score5.5 MEDIUM
EPSS probability0.34%
CISA KEVNot currently listed
Published2021-08-05
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

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.

Weakness classification

  • talos-cna@cisco.com: CWE-782
  • nvd@nist.gov: NVD-CWE-Other

Primary references