CVE-2026-47652 Windows Hyper-V Remote Code Execution Vulnerability

High 8.2 Published 9 Jun 2026 Updated 24 Sep 2026

An authorized local attacker can execute arbitrary code via a heap-based buffer overflow in Windows Hyper-V.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-47652?

CVE-2026-47652 is a high-severity memory corruption vulnerability in Microsoft Windows 11 23h2, published on 9 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to execute code locally.

Weakness: CWE-122

Which versions are affected by CVE-2026-47652?

It affects 6 products.

Products include Microsoft Windows 11 23h2, Microsoft Windows 11 24h2, Microsoft Windows 11 25h2, Microsoft Windows 11 26h1, Microsoft Windows Server 2022, Microsoft Windows Server 2025.

How do I fix CVE-2026-47652?

No fix has been published for CVE-2026-47652 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2026-47652 being exploited?

There is no known exploitation of CVE-2026-47652 in the wild and no public exploit code.

All Microsoft Windows 11 23h2 vulnerabilities

Sources

Also known as GHSA-6j5p-j4fx-r97w.