What is CVE-2022-21887?

CVE-2022-21887 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. Win32k Elevation of Privilege Vulnerability

Which CVE IDs does CVE-2022-21887 cover?

CVE-2022-21887 covers the following CVE IDs: CVE-2022-21887. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2022-21887?

CVE-2022-21887 has a CVSS v3 base score of 7.0, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2022-21887?

CVE-2022-21887 affects 2 products, including: Windows 11 version 21H2 for ARM64-based Systems; Windows 11 version 21H2 for x64-based Systems.

CVE-2022-21887HighCVSS 7.0

Win32k Elevation of Privilege Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

January 11, 2022

Last Modified

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🔗 CVE IDs covered (1)

CVE-2022-21887 →

📋 Description

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 products2

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

✅ Remediation

KB5009566 (Security Update) — fixed build 10.0.22000.434

🔗 References (3)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-21887
patchhttps://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB5009566
referencehttps://support.microsoft.com/help/5009566