Vulnerability · Published Jun 9, 2026 · Assigned by microsoft
CVE-2026-47652Windows Hyper-V Remote Code Execution Vulnerability
High 8.2
In plain English
A high-severity heap buffer overflow in Windows 11 version 23H2 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 28% of all known vulnerabilities).
Severity (CVSS 3.1)8.2High
Exploit odds (30 days)0.3%top 72.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to execute code locally.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 11 version 23H2 | 10.0.22631.0 – before 10.0.22631.7219 |
| Microsoft | Windows 11 Version 23H2 | 10.0.22631.0 – before 10.0.22631.7219 |
| Microsoft | Windows 11 Version 24H2 | 10.0.26100.0 – before 10.0.26100.8655 |
| Microsoft | Windows 11 Version 25H2 | 10.0.26200.0 – before 10.0.26200.8655 |
| Microsoft | Windows 11 version 26H1 | 10.0.28000.0 – before 10.0.28000.2269 |
| Microsoft | Windows Server 2022 | 10.0.20348.0 – before 10.0.20348.5256 |
| Microsoft | Windows Server 2025 | 10.0.26100.0 – before 10.0.26100.32995 |
| Microsoft | Windows Server 2025 (Server Core installation) | 10.0.26100.0 – before 10.0.26100.32995 |
Weakness: CWE-122 · Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C
References
- Windows Hyper-V Remote Code Execution Vulnerability vendor-advisory, patch