CVE-2025-21333: Windows Hyper-V NT Kernel Integration VSP Elevation of Privilege Vulnerability
First published: Tue Jan 14 2025(Updated: )
Microsoft Windows Hyper-V NT Kernel Integration VSP contains a heap-based buffer overflow vulnerability that allows a local attacker to gain SYSTEM privileges.
Credit: secure@microsoft.com secure@microsoft.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Microsoft Windows Server 2025 | ||
| Microsoft Windows 11 | =24H2 | |
| Microsoft Windows 11 | =22H2 | |
| Microsoft Windows 11 | =23H2 | |
| Microsoft Windows 11 | =22H2 | |
| Microsoft Windows 11 | =23H2 | |
| Microsoft Windows 10 | =22H2 | |
| Microsoft Windows 11 | =24H2 | |
| Microsoft Windows 10 | =21H2 | |
| Microsoft Windows Server 2022, 23H2 Edition | ||
| Microsoft Windows Server 2025 | ||
| Microsoft Windows |
Remedy
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
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Reference Links
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21333 (Advisory)
- https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2025-21333
- https://nvd.nist.gov/vuln/detail/CVE-2025-21333
- https://www.darkreading.com/application-security/microsoft-january-2025-record-security-update
- https://www.theregister.com/2025/01/15/patch_tuesday_january_2025/
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