CVE-2025-55687

HighCVSS 7.0/10Last modified Jun 17, 2026

Description

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Resilient File System (ReFS) allows an unauthorized attacker to elevate privileges locally.

Metrics

CVSS 3.1 7.0/10CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-362CWE-416

Affected software

VendorProductVersions
MicrosoftWindows 10 Version 1507>= 10.0.10240.0, < 10.0.10240.21161
MicrosoftWindows 10 Version 1607>= 10.0.14393.0, < 10.0.14393.8519
MicrosoftWindows 10 Version 1809>= 10.0.17763.0, < 10.0.17763.7919
MicrosoftWindows 10 Version 21H2>= 10.0.19044.0, < 10.0.19044.6456
MicrosoftWindows 10 Version 22H2>= 10.0.19045.0, < 10.0.19045.6456
MicrosoftWindows 11 version 22H2>= 10.0.22621.0, < 10.0.22621.6060
MicrosoftWindows 11 version 22H3>= 10.0.22631.0, < 10.0.22631.6060
MicrosoftWindows 11 Version 23H2>= 10.0.22631.0, < 10.0.22631.6060
MicrosoftWindows 11 Version 24H2>= 10.0.26100.0, < 10.0.26100.6899
MicrosoftWindows 11 Version 25H2>= 10.0.26200.0, < 10.0.26200.6899
MicrosoftWindows Server 2012>= 6.2.9200.0, < 6.2.9200.25722
MicrosoftWindows Server 2012 (Server Core installation)>= 6.2.9200.0, < 6.2.9200.25722
MicrosoftWindows Server 2012 R2>= 6.3.9600.0, < 6.3.9600.22824
MicrosoftWindows Server 2012 R2 (Server Core installation)>= 6.3.9600.0, < 6.3.9600.22824
MicrosoftWindows Server 2016>= 10.0.14393.0, < 10.0.14393.8519
MicrosoftWindows Server 2016 (Server Core installation)>= 10.0.14393.0, < 10.0.14393.8519
MicrosoftWindows Server 2019>= 10.0.17763.0, < 10.0.17763.7919
MicrosoftWindows Server 2019 (Server Core installation)>= 10.0.17763.0, < 10.0.17763.7919
MicrosoftWindows Server 2022>= 10.0.20348.0, < 10.0.20348.4294
MicrosoftWindows Server 2022, 23H2 Edition (Server Core installation)>= 10.0.25398.0, < 10.0.25398.1913
MicrosoftWindows Server 2025>= 10.0.26100.0, < 10.0.26100.6899
MicrosoftWindows Server 2025 (Server Core installation)>= 10.0.26100.0, < 10.0.26100.6899

References

Timeline

Published
Oct 14, 2025
Last modified
Jun 17, 2026
NVD status
Analyzed

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CVE-2025-55687: High severity, CVSS 7.0 | Vulnix