SB2025101577 - Privilege escalation in Microsoft Windows Resilient File System (ReFS) Deduplication Service
Published: October 15, 2025
Security Bulletin ID
SB2025101577
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2025-59210)
The vulnerability allows a local attacker to escalate privileges on the system.
The vulnerability exists due to a use-after-free error in Windows Resilient File System (ReFS) Deduplication Service. A local attacker can win a race condition and gain elevated privileges on the target system.
Remediation
Install update from vendor's website.