PT-2026-48040 · Microsoft · Windows 11 Version 23H2+5

Published 2026-06-09 · Updated 2026-06-09 · CVE-2026-47652

NVD

CVSS v3.1

8.2

High

Base vector

AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

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

Fix

Heap Based Buffer Overflow

Weakness Enumeration

CWE-122

Related Identifiers

CVE-2026-47652

Affected Products

Windows 11 Version 23H2

Windows 11 Version 24H2

Windows 11 Version 25H2

Windows 11 Version 26H1

Windows Server 2022

Windows Server 2025

References · 2

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47652 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-47652 · Security Note