CVE-2025-49751

Published: Aug 12, 2025Modified: Jun 17, 2026

6.8

Vector

CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Exploitability: 2.3 / Impact: 4.0

Source: secure@microsoft.com (Secondary)

Description

Missing synchronization in Windows Hyper-V allows an authorized attacker to deny service over an adjacent network.

Affected (12)

Products: Microsoft: Windows 10 1607, Windows 10 1809, Windows 10 21h2, Windows 10 22h2, Windows 11 22h2, Windows 11 23h2, Windows 11 24h2, Windows Server 2016, Windows Server 2019, Windows Server 2022, Windows Server 2022 23h2, Windows Server 2025

12 products

Windows 10 1607

Windows 10 1809

Windows 10 21h2

Windows 10 22h2

Windows 11 22h2

Windows 11 23h2

Windows 11 24h2

Windows Server 2016

Windows Server 2019

Windows Server 2022

Windows Server 2022 23h2

Windows Server 2025

Configuration A

12 vulnerable

Vulnerable Software	Affected Versions
Microsoft Windows 10 1607	version < 10.0.14393.8330
Microsoft Windows 10 1809	version < 10.0.17763.7678
Microsoft Windows 10 21h2	version < 10.0.19044.6216
Microsoft Windows 10 22h2	version < 10.0.19045.6216
Microsoft Windows 11 22h2	version < 10.0.22621.5768
Microsoft Windows 11 23h2	version < 10.0.22631.5768
Microsoft Windows 11 24h2	version < 10.0.26100.4851
Microsoft Windows Server 2016	version < 10.0.14393.8330
Microsoft Windows Server 2019	version < 10.0.17763.7678
Microsoft Windows Server 2022	version < 10.0.20348.3989
Microsoft Windows Server 2022 23h2	version < 10.0.25398.1791
Microsoft Windows Server 2025	version < 10.0.26100.4851

Related CWEs

Missing Synchronization

The product utilizes a shared resource in a concurrent manner but does not attempt to synchronize access to the resource.

References (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49751

Source: secure@microsoft.com

Vendor Advisory

Timeline

No history available yet.