Skip to content
OpenAdvisories
High MSRC-CVE-2025-49751 1 CVE

Windows Hyper-V Denial of Service Vulnerability

Published Aug 12, 2025 · Updated Aug 12, 2025

Summary

Impact: Denial of Service. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.

Details

According to the CVSS metric, a successful exploitation could lead to a scope change (S:C). What does this mean for this vulnerability?
In this case, a successful attack could be performed from a low privilege Hyper-V guest. The attacker could traverse the guest's security boundary to cause denial of service on the Hyper-V host environment.

According to the CVSS metric, the Hyper-V attack vector is adjacent (AV:A). What does that mean for this vulnerability?
Where the attack vector metric is Adjacent (A), this represents virtual machines connected via a Hyper-V Network Virtualization (HNV) logical network. This configuration forms an isolation boundary where the virtual machines within the virtual network can only communicate with each other. In this attack vector, the vulnerable component is bound to the network stack, but the attack is limited to systems configured to use the HNV network.

Security updates
10.0.17763.7678 — https://support.microsoft.com/help/5063877
10.0.20348.4052 — https://support.microsoft.com/help/5063880
10.0.20348.3989 — https://support.microsoft.com/help/5063812
10.0.19044.6216 — https://support.microsoft.com/help/5063709
10.0.22621.5768 — https://support.microsoft.com/help/5063875
10.0.26100.4946 — https://support.microsoft.com/help/5063878
10.0.26100.4851 — https://support.microsoft.com/help/5064010
10.0.25398.1791 — https://support.microsoft.com/help/5063899
10.0.14393.8330 — https://support.microsoft.com/help/5063871

Vulnerabilities 1

Revision history

  1. #1

    Information published.

References