Microsoft Brokering File System
CVE-2025-54105 — Microsoft Brokering File System Elevation of Privilege Vulnerability
Executive Summary
Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally.
Overview
7
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
ATTACK VECTOR
Local
ATTACK COMPLEXITY
High
PRIVILEGES REQUIRED
Low
USER INTERACTION
None
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
High
AVAILABILITY
High
EXPLOIT CODE MATURITY
Unproven
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 6.1
EPSS Score
0.00263
probability of exploitation in the next 30 days
0.18072 percentile - updated 2026-07-25
View on FIRST.org
Affected Products
1 affected product
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Windows 11 Version 24H2 for ARM64-based Systems 5065426 (Security Update) 5065474 (SecurityHotpatchUpdate) Important Elevation of Privilege 5063878 5064010 Base: 7.0 Temporal: 6.1 Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 10.0.26100.6584 10.0.26100.6508 Yes None Windows 11 Version 24H2 for x64-based Systems 5065426 (Security Update) 5065474 (SecurityHotpatchUpdate) Important Elevation of Privilege 5063878 5064010 Base: 7.0 Temporal: 6.1 Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C 10.0.26100.6584 10.0.26100.6508 Yes None Windows Server 2022, 23H2 Edition (Server Core installation) | 5065425 (Security Update) |
Important | Elevation of Privilege | Yes |
Patches
1 patch
| Article | Type | Restart |
|---|---|---|
5065425 |
Security Update | Yes |
Known Exploits
No known exploits have been linked for this CVE yet. When available, exploit references will be sourced from public repositories and may be unverified, incomplete, or non-functional. Always review code carefully before use in any environment.
Acknowledgments
ChenJian with Sea Security Orca Team
References
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