CVE-2025-47999: Windows Hyper-V Denial of Service Vulnerability
Published Jul 8, 2025
·Updated
Missing synchronization in Windows Hyper-V allows an authorized attacker to deny service over an adjacent network.
Other sources
Windows Hyper-V Denial of Service Vulnerability
— Microsoft
Affected Software
31 affected componentsFixes available
Microsoft Windows 11=24H2
Microsoft Windows 11=24H2
Microsoft Windows Server 2016
Microsoft Windows Server 2022, 23H2 Edition
Microsoft Windows Server 2016
Microsoft Windows 11=23H2
Microsoft Windows Server 2025
Microsoft Windows 10=1607
Microsoft Windows 10=22H2
Microsoft Windows 10=21H2
Microsoft Windows 11=22H2
Microsoft Windows 11=23H2
Microsoft Windows Server 2025
Microsoft Windows Server 2022
Microsoft Windows Server 2022
Microsoft Windows 11=22H2
Microsoft Windows Server 2019
Microsoft Windows 10=1809
Microsoft Windows Server 2019
Microsoft Windows 10 1607<10.0.14393.8246
Microsoft Windows 10 1809<10.0.17763.7558
Microsoft Windows 10 21h2<10.0.19044.6093
Microsoft Windows 10 22h2<10.0.19045.6093
Microsoft Windows 11 22h2<10.0.22621.5624
Microsoft Windows 11 23h2<10.0.22631.5624
Microsoft Windows 11 24h2<10.0.26100.4652
Microsoft Windows Server 2016<10.0.14393.8246
Microsoft Windows Server 2019<10.0.17763.7558
Microsoft Windows Server 2022<10.0.20348.3932
Microsoft Windows Server 2022 23h2<10.0.25398.1732
Microsoft Windows Server 2025<10.0.26100.4652
Event History
Jul 8, 2025
CVE Published
via Microsoft·07:00 AM
Data Sourced
via Microsoft·07:00 AM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·07:00 AM
Affected Software
Updated
via Microsoft·07:00 AM
Description
CVE Published
via MITRE·04:58 PM
Data Sourced
via MITRE·04:58 PM
DescriptionSeverity
Data Sourced
via NVD·05:15 PM
DescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2025-47999?
CVE-2025-47999 is classified as a denial of service vulnerability in Windows Hyper-V.
2
How do I fix CVE-2025-47999?
To fix CVE-2025-47999, apply the specific patches provided by Microsoft for your affected version of Windows.
3
Who is affected by CVE-2025-47999?
CVE-2025-47999 affects various versions of Windows, including Windows 11, Windows Server 2016, Windows Server 2022, and Windows 10.
4
What is the impact of CVE-2025-47999?
The impact of CVE-2025-47999 allows an authorized attacker to potentially deny service over an adjacent network.
5
Is there a workaround for CVE-2025-47999?
There are no known workarounds for CVE-2025-47999; it is recommended to apply the patches to mitigate the vulnerability.