What’s Vulnerable › Vulnerabilities

CVE-2022-21887: Win32k Elevation of Privilege Vulnerability

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-01-11 · updated 2026-06-17

Description

Win32k Elevation of Privilege Vulnerability

Affected products

• Microsoft Windows 11 version 21H2: all versions
• Microsoft Windows 11 21H2: from 10.0.0 before 10.0.22000.434 — fixed in 10.0.22000.434

How to fix

Upgrade to a fixed version: Microsoft Windows 11 21H2 10.0.22000.434. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-21887
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-21887

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