PT-2025-42098 · Microsoft · Windows Resilient File System+1

Published 2025-10-14 · Updated 2025-10-14 · CVE-2025-59206

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 flaw exists in the Windows Resilient File System (ReFS) Deduplication Service that could allow for privilege escalation. The issue is related to the ReFS deduplication process.

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

LPE

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

BDU:2025-13027

CVE-2025-59206

Affected Products

Windows

Windows Resilient File System

References · 7

• https://osv.dev/vulnerability/CVE-2025-59206 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59206 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-59206 · Security Note
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2025-59206 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-13027 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2025-59206 · Security Note
• https://twitter.com/CVEnew/status/1978198253716767123 · Twitter Post