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Vulnerability record · CVE-2025-55687 · published 14 October 2025

CVE-2025-55687: Microsoft windows 10 1507 race condition vulnerability

Microsoft · Windows 10 1507

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

7.0 CVSS 3.1 High EPSS 0.26% · top 83.7% CWE-362 · Race conditionCWE-416 · Use after free
7.0CVSS 3.1 base score
0.26%EPSS exploitation probability, 30 days
NoNot in CISA KEV
15Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

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.

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

Affected products

15 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-55687 Vendor Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2025-55687), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.