Jan 2022: Win32k Elevation of Privilege Vulnerability
CVE-2022-21882 Published on January 11, 2022

Win32k Elevation of Privilege Vulnerability
Win32k Elevation of Privilege Vulnerability

Vendor Advisory NVD

Known Exploited Vulnerability

This Microsoft Win32k Privilege Escalation Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. Microsoft Win32k contains an unspecified vulnerability which allows for privilege escalation.

The following remediation steps are recommended / required by February 18, 2022: Apply updates per vendor instructions.

Weakness Type

What is a Memory Corruption Vulnerability?

The software writes data past the end, or before the beginning, of the intended buffer. Typically, this can result in corruption of data, a crash, or code execution. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent write operation then produces undefined or unexpected results.

CVE-2022-21882 has been classified to as a Memory Corruption vulnerability or weakness.

Products Associated with CVE-2022-21882

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Microsoft Windows 10

Microsoft Windows 11

Microsoft Windows Server

Microsoft Windows Server 2019

Microsoft Windows 10 1909

Microsoft Windows 10 21h1

Microsoft Windows Server 2022

Microsoft Windows Server 20h2

Affected Versions

Microsoft Windows 10 Version 1809:

Version 10.0.17763.0 and below 10.0.17763.2452 is affected.

Microsoft Windows 10 Version 1809:

Version 10.0.0 and below 10.0.17763.2452 is affected.

Microsoft Windows Server 2019:

Version 10.0.17763.0 and below 10.0.17763.2452 is affected.

Microsoft Windows Server 2019 (Server Core installation):

Version 10.0.17763.0 and below 10.0.17763.2452 is affected.

Microsoft Windows 10 Version 1909:

Version 10.0.0 and below 10.0.18363.2037 is affected.

Microsoft Windows 10 Version 21H1:

Version 10.0.0 and below 10.0.19043.1466 is affected.

Microsoft Windows Server 2022:

Version 10.0.20348.0 and below 10.0.20348.469 is affected.

Microsoft Windows 10 Version 20H2:

Version 10.0.0 and below 10.0.19042.1466 is affected.

Microsoft Windows Server version 20H2:

Version 10.0.0 and below 10.0.19042.1466 is affected.

Microsoft Windows 11 version 21H2:

Version 10.0.0 and below 10.0.22000.434 is affected.

Microsoft Windows 10 Version 21H2:

Version 10.0.19043.0 and below 10.0.19044.1466 is affected.

Exploit Probability

EPSS

89.43%

Percentile

99.54%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.