Description
Windows Hyper-V NT Kernel Integration VSP Elevation of Privilege Vulnerability
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | Windows 10 Version 21H2 | 10.0.19044.0 – < 10.0.19044.5371 | 10.0.19044.5371 |
| Microsoft | Windows 10 Version 22H2 | 10.0.19045.0 – < 10.0.19045.5371 | 10.0.19045.5371 |
| Microsoft | Windows 11 version 22H2 | 10.0.22621.0 – < 10.0.22621.4751 | 10.0.22621.4751 |
| Microsoft | Windows 11 version 22H3 | 10.0.22631.0 – < 10.0.22631.4751 | 10.0.22631.4751 |
| Microsoft | Windows 11 Version 23H2 | 10.0.22631.0 – < 10.0.22631.4751 | 10.0.22631.4751 |
| Microsoft | Windows 11 Version 24H2 | 10.0.26100.0 – < 10.0.26100.2894 | 10.0.26100.2894 |
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) | 10.0.25398.0 – < 10.0.25398.1369 | 10.0.25398.1369 |
| Microsoft | Windows Server 2025 | 10.0.26100.0 – < 10.0.26100.2894 | 10.0.26100.2894 |
| Microsoft | Windows Server 2025 (Server Core installation) | 10.0.26100.0 – < 10.0.26100.2894 | 10.0.26100.2894 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 1
- Microsoft Windows Server 2025 Hyper-V NT Kernel Integration VSP - Elevation of Privilege EDB-52436 · local · Sep 16, 2025
GitHub 4 repositories
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MrAle98/CVE-2025-21333-POC ★ 233 · Feb 27, 2025
POC exploit for CVE-2025-21333 heap-based buffer overflow. It leverages WNF state data and I/O ring IOP_MC_BUFFER_ENTRY
-
nu1lptr0/CVE-2025-21333 ★ 23 · May 5, 2026
LPE due to integer truncation in vskrnlintvsp.sys
-
uname1able/CVE-2025-21333 ★ 0 · Jul 16, 2026
-
aleongx/KQL_sentinel_CVE-2025-21333 ★ 0 · Mar 11, 2025
KQL para deteccion de CVE-2025-21333 en Sentinel
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 3
- WID-SEC-2025-0091 Microsoft Windows: Mehrere Schwachstellen BSI CERT-Bund (WID) · Mar 25, 2025
- MSRC-CVE-2025-21333 Windows Hyper-V NT Kernel Integration VSP Elevation of Privilege Vulnerability Microsoft Security Response Center · Jan 15, 2025
- NCSC-2025-0010 Kwetsbaarheden verholpen in Microsoft Windows NCSC-NL (Netherlands) · Jan 14, 2025
References
- Windows Hyper-V NT Kernel Integration VSP Elevation of Privilege Vulnerability vendor-advisory patch