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TI-2022-06253 Aliases CVE-2022-21887GHSA-h585-m23x-h5c2

Win32k Elevation of Privilege Vulnerability

Priority LOW 36Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Privilege escalation
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Microsoft. Impact type from Microsoft.

Summary

Win32k Elevation of Privilege Vulnerability

Why it matters now

EPSS 0.01121 66th percentileScored 2026-11-07
Fix Fixed Microsoft: 1 update

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftWindows 11 version 21H210.0.0 to before 10.0.22000.43410.0.22000.434Patch availableCNA
  • Windows 11 version 21H2 VendorMicrosoft Affected 10.0.0 to before 10.0.22000.434 Fixed in 10.0.22000.434 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:microsoft:windows_11:-:*:*:*:*:*:arm64:*not specified by NVDVulnerableMicrosoft
cpe:2.3:o:microsoft:windows_11:-:*:*:*:*:*:x64:*not specified by NVDVulnerableMicrosoft
  • cpe:2.3:o:microsoft:windows_11:-:*:*:*:*:*:arm64:* Versions not specified by NVD Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_11:-:*:*:*:*:*:x64:* Versions not specified by NVD Vulnerable ·Microsoft

Remediation

Microsoft 1 update

  • KB5009566
    Security Update
    • Windows 11 version 21H2 for ARM64-based Systems 10.0.22000.434
    • Windows 11 version 21H2 for x64-based Systems 10.0.22000.434

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Elevation of Privilege
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation More Likely

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-21887
  2. 2026-10-03 Alias added: GHSA-h585-m23x-h5c2

References

Advisory 1

  • TI-2021-17499 Win32k Elevation of Privilege Vulnerability KEVCVSS 3.1HIGH 7.8
  • TI-2022-10056 Remote Procedure Call Runtime Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2022-06273 HTTP Protocol Stack Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2022-15533 Windows Internet Key Exchange (IKE) Protocol Extensions Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2023-08140 Windows Internet Key Exchange (IKE) Extension Denial of Service Vulnerability CVSS 3.1HIGH 7.5
  • TI-2022-12476 Windows Server Service Tampering Vulnerability CVSS 3.1HIGH 8.8
See all 572 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences