PT-2025-42037 · Microsoft · Windows Resilient File System+1

Published 2025-10-14 · Updated 2025-10-27 · CVE-2025-55687

Positive Technologies (AI Summary)

CVSS v3.1

7.4

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Windows Resilient File System (ReFS) (affected versions not specified)

Description A race condition exists due to improper synchronization when concurrent processes access shared resources within Windows Resilient File System (ReFS). This allows an attacker with local access to potentially elevate privileges. The issue can lead to privilege escalation from a standard user to SYSTEM-level privileges.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

LPE

Use After Free

Race Condition

Weakness Enumeration

CWE-416

CWE-362

Related Identifiers

BDU:2025-13217

CVE-2025-55687

Affected Products

Windows

Windows Resilient File System

References · 9

• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2025-55687 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-13217 · Security Note
• https://osv.dev/vulnerability/CVE-2025-55687 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-55687 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-55687 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-55687 · Security Note
• https://twitter.com/CVEnew/status/1978198276429029603 · Twitter Post
• https://twitter.com/CveTodo/status/1978179271706169803 · Twitter Post
• https://t.me/cveNotify/140490 · Telegram Post