CVE-2025-55224

HighCVSS 7.8/10Last modified Jun 17, 2026

Description

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Win32K - GRFX allows an authorized attacker to execute code locally.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Weakness enumeration

CWE-362CWE-416

Affected software

VendorProductVersions
MicrosoftWindows 10 Version 1809>= 10.0.17763.0, < 10.0.17763.7792
MicrosoftWindows 10 Version 21H2>= 10.0.19044.0, < 10.0.19044.6332
MicrosoftWindows 10 Version 22H2>= 10.0.19045.0, < 10.0.19045.6332
MicrosoftWindows 11 version 22H2>= 10.0.22621.0, < 10.0.22621.5909
MicrosoftWindows 11 version 22H3>= 10.0.22631.0, < 10.0.22631.5909
MicrosoftWindows 11 Version 23H2>= 10.0.22631.0, < 10.0.22631.5909
MicrosoftWindows 11 Version 24H2>= 10.0.26100.0, < 10.0.26100.6584
MicrosoftWindows Server 2019>= 10.0.17763.0, < 10.0.17763.7792
MicrosoftWindows Server 2019 (Server Core installation)>= 10.0.17763.0, < 10.0.17763.7792
MicrosoftWindows Server 2022>= 10.0.20348.0, < 10.0.20348.4171
MicrosoftWindows Server 2022, 23H2 Edition (Server Core installation)>= 10.0.25398.0, < 10.0.25398.1849
MicrosoftWindows Server 2025>= 10.0.26100.0, < 10.0.26100.6584
MicrosoftWindows Server 2025 (Server Core installation)>= 10.0.26100.0, < 10.0.26100.6584

References

Timeline

Published
Sep 9, 2025
Last modified
Jun 17, 2026
NVD status
Analyzed

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CVE-2025-55224: High severity, CVSS 7.8 | Vulnix