Denial of Service Vulnerability in Windows Hyper-V by Microsoft
CVE-2025-47999

6.8MEDIUM

Key Information:

Vendor

Microsoft
Status
Windows 10 Version 1809
Windows Server 2019
Windows Server 2019 (server Core Installation)
Windows Server 2022
Vendor
CVE Published:
8 July 2025

What is CVE-2025-47999?

A vulnerability in Windows Hyper-V allows an authorized attacker to exploit missing synchronization, potentially leading to a denial of service. This issue can be triggered over an adjacent network, enabling unauthorized disruptions to services. Organizations using Windows Hyper-V should assess their security measures to mitigate the risk associated with this vulnerability.

Affected Version(s)

Windows 10 Version 1607 x64-based Systems 10.0.14393.0 < 10.0.14393.8246

Windows 10 Version 1809 x64-based Systems 10.0.17763.0 < 10.0.17763.7558

Windows 10 Version 21H2 x64-based Systems 10.0.19044.0 < 10.0.19044.6093

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisory

CVSS V3.1

Score:
6.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.