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

Overview

Severity

High (CVSS 8.2)

CVSS 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

Category

Remote Code Execution

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2026-Jun

Released

2026-06-09

Description

Out-of-bounds read in Windows Hyper-V allows an unauthorized attacker to execute code locally.

FAQ

According to the CVSS metric, a successful exploitation could lead to a scope change (S:C). What does this mean for this vulnerability? An exploited vulnerability can affect resources beyond the security scope managed by the security authority of the vulnerable component. In this case, the vulnerable component and the impacted component are different and managed by different security authorities. How could an attacker exploit this vulnerability? An attacker could exploit this vulnerability by running code within a virtualized environment and issuing a specially crafted hypercall with a maliciously large or malformed payload size. By manipulating this input, the attacker can trigger a buffer overflow in the hypervisor during memory operations.

Affected Products (12)

Windows

• Windows Server 2022
• Windows Server 2022 (Server Core installation)
• Windows Server 2025 (Server Core installation)
• Windows 11 Version 25H2 for ARM64-based Systems
• Windows 11 Version 25H2 for x64-based Systems
• Windows 11 Version 23H2 for ARM64-based Systems
• Windows 11 Version 23H2 for x64-based Systems
• Windows 11 Version 24H2 for ARM64-based Systems
• Windows 11 Version 24H2 for x64-based Systems
• Windows Server 2025
• Windows 11 version 26H1 for x64-based Systems
• Windows 11 Version 26H1 for ARM64-based Systems

Security Updates (5)

• 5094128
• 5094125
• 5094126
• 5093998
• 5095051

Acknowledgments

MORSE with Microsoft

Revision History

• 2026-06-09: Information published.