CVE-2025-55328: Windows Hyper-V Elevation of Privilege Vulnerability
Published Oct 14, 2025
·Updated
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Hyper-V allows an authorized attacker to elevate privileges locally.
Other sources
Windows Hyper-V Elevation of Privilege Vulnerability
— Microsoft
Affected Software
36 affected componentsFixes available
Microsoft Windows Server 2016
Microsoft Windows 10=1607
Microsoft Windows 11=24H2
Microsoft Windows Server 2016
Microsoft Windows 11=24H2
Microsoft Windows Server 2025
Microsoft Windows 11=23H2
Microsoft Windows Server 2022, 23H2 Edition
Microsoft Windows Server 2025
Microsoft Windows 10
Microsoft Windows 11=23H2
Microsoft Windows 11=22H2
Microsoft Windows 10=22H2
Microsoft Windows 11=22H2
Microsoft Windows 10=21H2
Microsoft Windows Server 2022
Microsoft Windows 11=25H2
Microsoft Windows Server 2022
Microsoft Windows 10=1809
Microsoft Windows Server 2019
Microsoft Windows Server 2019
Microsoft Windows 11=25H2
Microsoft Windows 10 1507<10.0.10240.21161
Microsoft Windows 10 1607<10.0.14393.8519
Microsoft Windows 10 1809<10.0.17763.7919
Microsoft Windows 10 21h2<10.0.19044.6456
Microsoft Windows 10 22h2<10.0.19045.6456
Microsoft Windows 11 22h2<10.0.22621.6060
Microsoft Windows 11 23h2<10.0.22631.6060
Microsoft Windows 11 24h2<10.0.26100.6899
Microsoft Windows 11 25h2<10.0.26200.6899
Microsoft Windows Server 2016<10.0.14393.8519
Microsoft Windows Server 2019<10.0.17763.7919
Microsoft Windows Server 2022<10.0.20348.4294
Microsoft Windows Server 2022 23h2<10.0.25398.1913
Microsoft Windows Server 2025<10.0.26100.6899
Event History
Oct 14, 2025
CVE Published
via Microsoft·07:00 AM
Data Sourced
via Microsoft·07:00 AM
DescriptionSeverityWeakness
Data Sourced
via Microsoft·02:00 PM
Affected Software
Updated
via Microsoft·02:00 PM
Description
CVE Published
via MITRE·05:01 PM
Data Sourced
via MITRE·05:01 PM
DescriptionSeverity
Data Sourced
via NVD·05:15 PM
DescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2025-55328?
CVE-2025-55328 is classified as an Elevation of Privilege vulnerability in Windows Hyper-V.
2
How do I fix CVE-2025-55328?
To fix CVE-2025-55328, apply the latest security patches provided by Microsoft for the affected Windows versions.
3
Who is affected by CVE-2025-55328?
CVE-2025-55328 affects users of Windows Server 2016, Windows 10, and Windows 11 across various editions.
4
What type of vulnerability is CVE-2025-55328?
CVE-2025-55328 is a race condition vulnerability that allows unauthorized local privilege escalation.
5
Can CVE-2025-55328 be exploited remotely?
CVE-2025-55328 requires local access for exploitation, so it cannot be exploited remotely.