Description
Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to execute code locally.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | Windows 10 Version 1607 | 10.0.14393.0 – < 10.0.14393.8868 | 10.0.14393.8868 |
| Microsoft | Windows 10 Version 1809 | 10.0.17763.0 – < 10.0.17763.8389 | 10.0.17763.8389 |
| Microsoft | Windows 10 Version 21H2 | 10.0.19044.0 – < 10.0.19044.6937 | 10.0.19044.6937 |
| Microsoft | Windows 10 Version 22H2 | 10.0.19045.0 – < 10.0.19045.6937 | 10.0.19045.6937 |
| Microsoft | Windows 11 version 22H3 | 10.0.22631.0 – < 10.0.22631.6649 | 10.0.22631.6649 |
| Microsoft | Windows 11 Version 23H2 | 10.0.22631.0 – < 10.0.22631.6649 | 10.0.22631.6649 |
| Microsoft | Windows 11 Version 24H2 | 10.0.26100.0 – < 10.0.26100.7840 | 10.0.26100.7840 |
| Microsoft | Windows 11 Version 25H2 | 10.0.26200.0 – < 10.0.26200.7840 | 10.0.26200.7840 |
| Microsoft | Windows 11 version 26H1 | 10.0.28000.0 – < 10.0.28000.1575 | 10.0.28000.1575 |
| Microsoft | Windows Server 2016 | 10.0.14393.0 – < 10.0.14393.8868 | 10.0.14393.8868 |
| Microsoft | Windows Server 2016 (Server Core installation) | 10.0.14393.0 – < 10.0.14393.8868 | 10.0.14393.8868 |
| Microsoft | Windows Server 2019 | 10.0.17763.0 – < 10.0.17763.8389 | 10.0.17763.8389 |
| Microsoft | Windows Server 2019 (Server Core installation) | 10.0.17763.0 – < 10.0.17763.8389 | 10.0.17763.8389 |
| Microsoft | Windows Server 2022 | 10.0.20348.0 – < 10.0.20348.4773 | 10.0.20348.4773 |
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) | 10.0.25398.0 – < 10.0.25398.2149 | 10.0.25398.2149 |
| Microsoft | Windows Server 2025 | 10.0.26100.0 – < 10.0.26100.32370 | 10.0.26100.32370 |
| Microsoft | Windows Server 2025 (Server Core installation) | 10.0.26100.0 – < 10.0.26100.32370 | 10.0.26100.32370 |
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
- Windows 11 25H2 - Heap Overflow EDB-52537 · local · Apr 30, 2026
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Advisories 3
- WID-SEC-2026-0369 Microsoft Windows: Mehrere Schwachstellen BSI CERT-Bund (WID) · Mar 26, 2026
- NCSC-2026-0053 Kwetsbaarheden verholpen in Microsoft Windows NCSC-NL (Netherlands) · Feb 10, 2026
- MSRC-CVE-2026-21244 Windows Hyper-V Remote Code Execution Vulnerability Microsoft Security Response Center · Feb 10, 2026
References
- Windows Hyper-V Remote Code Execution Vulnerability vendor-advisory patch