CVE-2025-21333

high

Description

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

References

https://www.tenable.com/blog/microsofts-january-2025-patch-tuesday-157-cves-cve-2025-21333-cve-2025-21334-cve-2025-21335

https://www.securityweek.com/microsoft-patches-trio-of-exploited-windows-hyper-v-zero-days/

https://www.vicarius.io/vsociety/posts/cve-2025-21333-elevated-privilege-exposure-in-windows-hyper-v-by-microsoft-mitigation-script

https://www.vicarius.io/vsociety/posts/cve-2025-21333-elevated-privilege-exposure-in-windows-hyper-v-by-microsoft-detection-script

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21333

Details

Source: Mitre, NVD

Published: 2025-01-14

Updated: 2025-04-03

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 7.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High