CVE-2026-69617
High
Description
Out-of-bounds read in Windows Resilient File System (ReFS) allows an authorized attacker to elevate privileges locally.
SeverityHigh
CVSS7.0
Exploit probability—
Product
Microsoft Windows
PublishedSep 8, 2026
First seenSep 8, 2026
Weakness typeCWE-125Out-of-bounds read
How to fix
Update
- microsoft windows_11_26h110.0.28000.2954 or later
- microsoft windows_server_202510.0.26100.33438 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| microsoft windows_11_26h1 | v < 10.0.28000.2954 | 10.0.28000.2954 |
| microsoft windows_server_2025 | v < 10.0.26100.33438 | 10.0.26100.33438 |
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