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CVE-2025-21182

Windows Resilient File System (ReFS) Deduplication Service Elevation of Privilege Vulnerability

HIGH
7.4
CVSS Score
Published: February 11, 2025 at 05:58 PM UTC
Updated: June 17, 2026 at 08:42 AM UTC
2 products affected across 1 vendorWindows Server 2025Windows 11 24H2

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Severity
HIGH7.4
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

Description

Windows Resilient File System (ReFS) Deduplication Service Elevation of Privilege Vulnerability

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Windows 11 24H2· Microsoft
95%
v < 10.0.26100.310710.0.26100.0 ≤ v < 10.0.26100.319410.0.26100.0
Affected range stops below 10.0.26100.3107, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.0.26100.3194, so it looks safe — our inference, not a vendor statement
Windows Server 2025· Microsoft
95%
v < 10.0.26100.310710.0.26100.0 ≤ v < 10.0.26100.319410.0.26100.0
Affected range stops below 10.0.26100.3107, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.0.26100.3194, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor AdvisoryPatch
Source: [email protected]
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21182

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.4HIGHmicrosoft
Vector?

Quick Info

StatusANALYZED
CWE
CWE-415NVD-CWE-noinfo

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