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MEDIUM · 6.8

CVE-2025-49751

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

Vulnerability Description

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

CVSS Score

6.8

MEDIUM

CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Affected Products

VendorProductVersions
MicrosoftWindows 10 1607< 10.0.14393.8330
MicrosoftWindows 10 1809< 10.0.17763.7678
MicrosoftWindows 10 21H2< 10.0.19044.6216
MicrosoftWindows 10 22H2< 10.0.19045.6216
MicrosoftWindows 11 22H2< 10.0.22621.5768
MicrosoftWindows 11 23H2< 10.0.22631.5768
MicrosoftWindows 11 24H2< 10.0.26100.4851
MicrosoftWindows Server 2016< 10.0.14393.8330
MicrosoftWindows Server 2019< 10.0.17763.7678
MicrosoftWindows Server 2022< 10.0.20348.3989
MicrosoftWindows Server 2022 23H2< 10.0.25398.1791
MicrosoftWindows Server 2025< 10.0.26100.4851

Related Weaknesses (CWE)

CWE-820

References

FAQ

What is CVE-2025-49751?

CVE-2025-49751 is a vulnerability with a CVSS score of 6.8 (MEDIUM). Missing synchronization in Windows Hyper-V allows an authorized attacker to deny service over an adjacent network.

How severe is CVE-2025-49751?

CVE-2025-49751 has been rated MEDIUM with a CVSS base score of 6.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-49751?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Windows 10 1607, Microsoft Windows 10 1809, Microsoft Windows 10 21H2, Microsoft Windows 10 22H2, Microsoft Windows 11 22H2.