CVE-2025-49659
High
Description
Buffer over-read in Windows TDX.sys allows an authorized attacker to elevate privileges locally.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Microsoft Windows
PublishedJul 8, 2025
First seenJul 8, 2025
Weakness typeCWE-126CWE-126
How to fix
Update
- microsoft windows_10_150710.0.10240.21073 or later
- microsoft windows_10_160710.0.14393.8246 or later
- microsoft windows_10_180910.0.17763.7558 or later
- microsoft windows_10_21h210.0.19044.6093 or later
- microsoft windows_10_22h210.0.19045.6093 or later
- microsoft windows_11_22h210.0.22621.5624 or later
- microsoft windows_11_23h210.0.22631.5624 or later
- microsoft windows_11_24h210.0.26100.4652 or later
- microsoft windows_server_201610.0.14393.8246 or later
- microsoft windows_server_201910.0.17763.7558 or later
- microsoft windows_server_202210.0.20348.3932 or later
- microsoft windows_server_2022_23h210.0.25398.1732 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| microsoft windows_10_1507 | v < 10.0.10240.21073 | 10.0.10240.21073 |
| microsoft windows_10_1607 | v < 10.0.14393.8246 | 10.0.14393.8246 |
| microsoft windows_10_1809 | v < 10.0.17763.7558 | 10.0.17763.7558 |
| microsoft windows_10_21h2 | v < 10.0.19044.6093 | 10.0.19044.6093 |
| microsoft windows_10_22h2 | v < 10.0.19045.6093 | 10.0.19045.6093 |
| microsoft windows_11_22h2 | v < 10.0.22621.5624 | 10.0.22621.5624 |
| microsoft windows_11_23h2 | v < 10.0.22631.5624 | 10.0.22631.5624 |
| microsoft windows_11_24h2 | v < 10.0.26100.4652 | 10.0.26100.4652 |
| microsoft windows_server_2008 | No range specified, r2 | — |
| microsoft windows_server_2012 | No range specified, r2 | — |
| microsoft windows_server_2016 | v < 10.0.14393.8246 | 10.0.14393.8246 |
| microsoft windows_server_2019 | v < 10.0.17763.7558 | 10.0.17763.7558 |
| microsoft windows_server_2022 | v < 10.0.20348.3932 | 10.0.20348.3932 |
| microsoft windows_server_2022_23h2 | v < 10.0.25398.1732 | 10.0.25398.1732 |
| microsoft windows_server_2025 | v < 10.0.26100.4652 | 10.0.26100.4652 |
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