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CVE-2025-55228

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CVE-2025-55228

Published: Sep 9, 2025

Modified: Feb 26, 2026

PUBLISHED

CVSS v3.1

7.8

HIGH

Description

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

VendorProductVersions

Microsoft

Windows 10 Version 21H2

affected
10.0.19044.0 - < 10.0.19044.6332

Microsoft

Windows 10 Version 22H2

affected
10.0.19045.0 - < 10.0.19045.6332

Microsoft

Windows 11 version 22H2

affected
10.0.22621.0 - < 10.0.22621.5909

Microsoft

Windows 11 version 22H3

affected
10.0.22631.0 - < 10.0.22631.5909

Microsoft

Windows 11 Version 23H2

affected
10.0.22631.0 - < 10.0.22631.5909

Microsoft

Windows 11 Version 24H2

affected
10.0.26100.0 - < 10.0.26100.6584

Microsoft

Windows Server 2022

affected
10.0.20348.0 - < 10.0.20348.4171

Microsoft

Windows Server 2022, 23H2 Edition (Server Core installation)

affected
10.0.25398.0 - < 10.0.25398.1849

Microsoft

Windows Server 2025

affected
10.0.26100.0 - < 10.0.26100.6584

Microsoft

Windows Server 2025 (Server Core installation)

affected
10.0.26100.0 - < 10.0.26100.6584

Weaknesses (CWE)

CWE-362
CWE-416

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

References

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