CVE-2026-26181
High
Description
Use after free in Microsoft Brokering File System allows an authorized attacker to elevate privileges locally.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Microsoft Windows
PublishedApr 14, 2026
First seenApr 14, 2026
Weakness typeCWE-416Use after freeCWE-362Race condition
How to fix
Update
- microsoft windows_11_23h210.0.22631.6936 or later
- microsoft windows_11_24h210.0.26100.8246 or later
- microsoft windows_11_25h210.0.26200.8246 or later
- microsoft windows_11_26h110.0.28000.1836 or later
- microsoft windows_server_2022_23h210.0.25398.2274 or later
- microsoft windows_server_202510.0.26100.32690 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| microsoft windows_11_23h2 | v < 10.0.22631.6936 | 10.0.22631.6936 |
| microsoft windows_11_24h2 | v < 10.0.26100.8246 | 10.0.26100.8246 |
| microsoft windows_11_25h2 | v < 10.0.26200.8246 | 10.0.26200.8246 |
| microsoft windows_11_26h1 | v < 10.0.28000.1836 | 10.0.28000.1836 |
| microsoft windows_server_2022_23h2 | v < 10.0.25398.2274 | 10.0.25398.2274 |
| microsoft windows_server_2025 | v < 10.0.26100.32690 | 10.0.26100.32690 |
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