CVE-2022-21887: Win32k Elevation of Privilege Vulnerability

Overview

Severity

High (CVSS 7)

CVSS Vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Category

Elevation of Privilege

Exploit Status

Not Exploited

Exploitation Likelihood

More Likely

Patch Tuesday

2022-Jan

Released

2022-01-11

EPSS Score

0.46% (percentile: 64.3%)

FAQ

What privileges could be gained by an attacker who successfully exploited the vulnerability? A local, authenticated attacker could gain elevated local system or administrator privileges through a vulnerability in the Win32k.sys driver.

Affected Products (2)

Windows

• Windows 11 version 21H2 for x64-based Systems
• Windows 11 version 21H2 for ARM64-based Systems

Security Updates (1)

• 5009566

Acknowledgments

k0shl with Kunlun Lab

Revision History

• 2022-01-11: Information published.