7.8

CVE-2025-21335

Warning

Windows Hyper-V NT Kernel Integration VSP Elevation of Privilege Vulnerability

Data is provided by the National Vulnerability Database (NVD)
Microsoft ≫ Windows 10 21h2 HwPlatformx64 Version < 10.0.19044.5371
Microsoft ≫ Windows 10 22h2 HwPlatformx64 Version < 10.0.19045.5371
Microsoft ≫ Windows 11 22h2 HwPlatformarm64 Version < 10.0.22621.4751
Microsoft ≫ Windows 11 22h2 HwPlatformx64 Version < 10.0.22621.4751
Microsoft ≫ Windows 11 23h2 HwPlatformarm64 Version < 10.0.22621.4751
Microsoft ≫ Windows 11 23h2 HwPlatformx64 Version < 10.0.22631.4751
Microsoft ≫ Windows 11 24h2 HwPlatformarm64 Version < 10.0.26100.2894
Microsoft ≫ Windows 11 24h2 HwPlatformx64 Version < 10.0.26100.2894
Microsoft ≫ Windows Server 2022 23h2 Version < 10.0.25398.1369
Microsoft ≫ Windows Server 2025 Version < 10.0.26100.2894

14.01.2025: CISA Known Exploited Vulnerabilities (KEV) Catalog

Microsoft Windows Hyper-V NT Kernel Integration VSP Use-After-Free Vulnerability

Vulnerability

Microsoft Windows Hyper-V NT Kernel Integration VSP contains a use-after-free vulnerability that allows a local attacker to gain SYSTEM privileges.

Description

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Required actions
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 5.77% 0.901
CVSS Metriken
Source Base Score Exploit Score Impact Score Vector string
secure@microsoft.com 7.8 1.8 5.9
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.