CVE-2025-21333

Published: Jan 14, 2025Modified: Nov 3, 2025CISA KEV

7.8

Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitability: 1.8 / Impact: 5.9

Source: secure@microsoft.com (Secondary)

Description

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

Affected (7)

Products: Microsoft: Windows 10 21h2, Windows 10 22h2, Windows 11 22h2, Windows 11 23h2, Windows 11 24h2, Windows Server 2022 23h2, Windows Server 2025

7 products

Windows 10 21h2

Windows 10 22h2

Windows 11 22h2

Windows 11 23h2

Windows 11 24h2

Windows Server 2022 23h2

Windows Server 2025

Configuration A

7 vulnerable

Vulnerable Software	Affected Versions
Microsoft Windows 10 21h2	Before 10.0.19044.5371
Microsoft Windows 10 22h2	Before 10.0.19045.5371
Microsoft Windows 11 22h2	Before 10.0.22621.4751
Microsoft Windows 11 23h2	Before 10.0.22631.4751
Microsoft Windows 11 24h2	Before 10.0.26100.2894
Microsoft Windows Server 2022 23h2	Before 10.0.25398.1369
Microsoft Windows Server 2025	Before 10.0.26100.2894

Related CWEs

Heap-based Buffer Overflow

A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

References (5)

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

Source: secure@microsoft.com

PatchVendor Advisory

https://www.exploit-db.com/exploits/52436

Source: af854a3a-2127-422b-91ae-364da2661108

ExploitThird Party AdvisoryVDB Entry

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

Source: af854a3a-2127-422b-91ae-364da2661108

MitigationThird Party Advisory

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

Source: af854a3a-2127-422b-91ae-364da2661108

MitigationThird Party Advisory

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-21333

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

US Government Resource

Timeline

No history available yet.