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CVE

CVE-2025-55687

Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Resilient File Sy

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

HIGH · CVSS 7.4 EPSS 0.00035
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CWE-416Use After Free
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Affected Products & Versions

15
microsoft windows 10 1507< 10.0.10240.21161
microsoft windows 10 1607< 10.0.14393.8519
microsoft windows 10 1809< 10.0.17763.7919
microsoft windows 10 21h2< 10.0.19044.6456
microsoft windows 10 22h2< 10.0.19045.6456
microsoft windows 11 22h2< 10.0.22621.6060
microsoft windows 11 23h2< 10.0.22631.6060
microsoft windows 11 24h2< 10.0.26100.6899
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Scoring & Timeline

7.4
HIGH · CVSS v3.1 · secure@microsoft.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD14 Oct 2025 · 05:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
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Vendor Advisories

1
msrcCVE-2025-55687Elevation of Privilege
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