Vulnerability · Published Mar 10, 2026 · Assigned by microsoft
CVE-2026-25167Microsoft Brokering File System Elevation of Privilege Vulnerability
High 7.4
In plain English
A high-severity use-after-free in Windows 11 Version 24H2 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities).
Severity (CVSS 3.1)7.4High
Exploit odds (30 days)0.3%top 72.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Use after free in Microsoft Brokering File System allows an unauthorized attacker to elevate privileges locally.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 11 Version 24H2 | 10.0.26100.0 – before 10.0.26100.8037 |
| Microsoft | Windows 11 Version 25H2 | 10.0.26200.0 – before 10.0.26200.8037 |
| Microsoft | Windows 11 version 26H1 | 10.0.28000.0 – before 10.0.28000.1719 |
| Microsoft | Windows Server 2025 | 10.0.26100.0 – before 10.0.26100.32522 |
| Microsoft | Windows Server 2025 (Server Core installation) | 10.0.26100.0 – before 10.0.26100.32522 |
Weakness: CWE-416 · Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
References
- Microsoft Brokering File System Elevation of Privilege Vulnerability vendor-advisory, patch