Microsoft Brokering File System
CVE-2025-29970 — Microsoft Brokering File System Elevation of Privilege Vulnerability
Executive Summary
Use after free in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally.
Overview
7.8
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS Vector
ATTACK VECTOR
Local
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
Low
USER INTERACTION
None
SCOPE
Unchanged
Temporal Score: 6.8
EPSS Score
0.0043
probability of exploitation in the next 30 days
0.34196 percentile - updated 2026-06-20
View on FIRST.org
Affected Products
5 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Windows 11 Version 24H2 for ARM64-based Systems | 5058411 (Security Update) 5058497 (SecurityHotpatchUpdate) |
Important | Elevation of Privilege | Yes |
| Windows 11 Version 24H2 for x64-based Systems | 5058411 (Security Update) 5058497 (SecurityHotpatchUpdate) |
Important | Elevation of Privilege | Yes |
| Windows Server 2022, 23H2 Edition (Server Core installation) | 5058384 (Security Update) |
Important | Elevation of Privilege | Yes |
| Windows Server 2025 | 5058411 (Security Update) 5058497 (SecurityHotpatchUpdate) |
Important | Elevation of Privilege | Yes |
| Windows Server 2025 (Server Core installation) | 5058411 (Security Update) 5058497 (SecurityHotpatchUpdate) |
Important | Elevation of Privilege | Yes |
Patches
2 patches
| Article | Type | Restart |
|---|---|---|
5058411 (Security Update) 5058497 |
Security Update | Yes |
5058384 |
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
Microsoft Offensive Research & Security Engineering, hazard
References
On This Page