CVE-2025-59206
published 2025-10-14CVE-2025-59206: Windows Resilient File System (ReFS) Deduplication Service Elevation of Privilege Vulnerability
PriorityP341high7.4CVSS 3.1
AVLACHPRNUINSUCHIHAH
EPSS
0.34%
25.9th percentile
Windows Resilient File System (ReFS) Deduplication Service Elevation of Privilege Vulnerability
Affected
11 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | windows_11_24h2 | < 10.0.26100.6899 | 10.0.26100.6899 |
| microsoft | windows_11_25h2 | < 10.0.26200.6899 | 10.0.26200.6899 |
| microsoft | windows_11_version_24h2 | >= 10.0.26100.0 < 10.0.26100.6899 | 10.0.26100.6899 |
| microsoft | windows_11_version_25h2 | >= 10.0.26200.0 < 10.0.26200.6899 | 10.0.26200.6899 |
| microsoft | windows_server_2025 | <= 10.0.26100.6899 | — |
| microsoft | windows_server_2025 | >= 10.0.26100.0 < 10.0.26100.6899 | 10.0.26100.6899 |
| msrc | windows_11_version_24h2_for_arm64-based_systems | — | — |
| msrc | windows_11_version_24h2_for_x64-based_systems | — | — |
| msrc | windows_11_version_25h2_for_arm64-based_systems | — | — |
| msrc | windows_11_version_25h2_for_x64-based_systems | — | — |
| msrc | windows_server_2025 | — | — |
CVSS provenance
nvdv3.17.4HIGHCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
vendor_msrc7.4HIGH
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GHSA
GHSA-v786-hjfg-r469: Windows Resilient File System (ReFS) Deduplication Service Elevation of Privilege Vulnerability
ghsa_unreviewed·2025-10-14
CVE-2025-59206 [HIGH] CWE-416 GHSA-v786-hjfg-r469: Windows Resilient File System (ReFS) Deduplication Service Elevation of Privilege Vulnerability
Windows Resilient File System (ReFS) Deduplication Service Elevation of Privilege Vulnerability
Microsoft
Windows Resilient File System (ReFS) Deduplication Service Elevation of Privilege Vulnerability
vendor_msrc·2025-10-14·CVSS 7.4
CVE-2025-59206 [HIGH] CWE-416 Windows Resilient File System (ReFS) Deduplication Service Elevation of Privilege Vulnerability
Windows Resilient File System (ReFS) Deduplication Service Elevation of Privilege Vulnerability
FAQ: What privileges could be gained by an attacker who successfully exploited this vulnerability?
An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.
FAQ: According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?
Successful exploitation of this vulnerability requires an attacker to win a race condition.
Windows Resilient File System (ReFS) Deduplication Service: Windows Resilient File System (ReFS) Deduplication Service
Microsoft: Microsoft
Customer Action Required: Yes
Impact: Elevation of Privilege
Exploit Status: Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Unlikely
Re
No detection rules found.
No public exploits indexed.
Qualys
Microsoft and Adobe Patch Tuesday, October 2025 Security Update Review | Qualys
blogs_qualys·2025-10-14
Microsoft and Adobe Patch Tuesday, October 2025 Security Update Review | Qualys
#### Table of Contents
- Microsoft Patch Tuesday for October 2025
- Adobe Patches for October 2025
- Zero-day Vulnerabilities Patched in October Patch Tuesday Edition
- Critical Severity Vulnerabilities Patched in October Patch Tuesday Edition
- Other Microsoft Vulnerability Highlights
- Microsoft Release Summary
- Discover and Prioritize Vulnerabilities inVulnerability Management, Detection & Response (VMDR)
- Rapid Response with TruRisk Eliminate
- Automating Risk Elimination and Accelerating Response: Meet Agent Sara
- EVALUATE Vendor-Suggested Mitigation withPolicy Audit
- Qualys Monthly Webinar Series
As cybersecurity threats evolve, Microsoft’s October 2025 Patch Tuesday delivers one of the most comprehensive security updates of the year. Here’s a quick breakdown of what you need t
Qualys
Microsoft and Adobe Patch Tuesday, October 2025 Security Update Review
blogs_qualys·2025-10-14
Microsoft and Adobe Patch Tuesday, October 2025 Security Update Review
## Table of Contents
Microsoft Patch Tuesday for October 2025
Adobe Patches for October 2025
Zero-day Vulnerabilities Patched in October Patch Tuesday Edition
Critical Severity Vulnerabilities Patched in October Patch Tuesday Edition
Other Microsoft Vulnerability Highlights
Microsoft Release Summary
Discover and Prioritize Vulnerabilities inVulnerability Management, Detection & Response (VMDR)
Rapid Response with TruRisk Eliminate
Automating Risk Elimination and Accelerating Response: Meet Agent Sara
EVALUATE Vendor-Suggested Mitigation withPolicy Audit
Qualys Monthly Webinar Series
As cybersecurity threats evolve, Microsoft’s October 2025 Patch Tuesday delivers one of the most comprehensive security updates of the year. Here’s a quick breakdown of what you need to know.
## Mi
Bleepingcomputer
Microsoft October 2025 Patch Tuesday fixes 6 zero-days, 172 flaws
blogs_bleepingcomputer·2025-10-14·CVSS 7.8
[HIGH] Microsoft October 2025 Patch Tuesday fixes 6 zero-days, 172 flaws
## Microsoft October 2025 Patch Tuesday fixes 6 zero-days, 172 flaws
## Lawrence Abrams
80 Elevation of Privilege Vulnerabilities
11 Security Feature Bypass Vulnerabilities
31 Remote Code Execution Vulnerabilities
28 Information Disclosure Vulnerabilities
11 Denial of Service Vulnerabilities
10 Spoofing Vulnerabilities
When BleepingComputer reports on the Patch Tuesday security updates, we only count those released today by Microsoft. Therefore, the number of flaws does not include those fixed in Azure, Mariner, Microsoft Edge, and other vulnerabilities earlier this month.
Notably, Windows 10 reaches the end of support today , with this being the last Patch Tuesday where Microsoft provides free security updates to the venerable operating system.
To continue receiving security upd
2025-10-14
Published