CVE-2025-49751
published 2025-08-12CVE-2025-49751: Missing synchronization in Windows Hyper-V allows an authorized attacker to deny service over an adjacent network.
medium6.8CVSS 3.1
AVAACLPRLUINSCCNINAH
Missing synchronization in Windows Hyper-V allows an authorized attacker to deny service over an adjacent network.
Affected
39 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | windows_10_1607 | < 10.0.14393.8330 | 10.0.14393.8330 |
| microsoft | windows_10_1809 | < 10.0.17763.7678 | 10.0.17763.7678 |
| microsoft | windows_10_21h2 | < 10.0.19044.6216 | 10.0.19044.6216 |
| microsoft | windows_10_22h2 | < 10.0.19045.6216 | 10.0.19045.6216 |
| microsoft | windows_10_version_1607 | >= 10.0.14393.0 < 10.0.14393.8330 | 10.0.14393.8330 |
| microsoft | windows_10_version_1809 | >= 10.0.17763.0 < 10.0.17763.7678 | 10.0.17763.7678 |
| microsoft | windows_10_version_21h2 | >= 10.0.19044.0 < 10.0.19044.6216 | 10.0.19044.6216 |
| microsoft | windows_10_version_22h2 | >= 10.0.19045.0 < 10.0.19045.6216 | 10.0.19045.6216 |
| microsoft | windows_11_22h2 | < 10.0.22621.5768 | 10.0.22621.5768 |
| microsoft | windows_11_23h2 | < 10.0.22631.5768 | 10.0.22631.5768 |
| microsoft | windows_11_24h2 | < 10.0.26100.4851 | 10.0.26100.4851 |
| microsoft | windows_11_version_22h2 | >= 10.0.22621.0 < 10.0.22621.5768 | 10.0.22621.5768 |
| microsoft | windows_11_version_22h3 | >= 10.0.22631.0 < 10.0.22631.5768 | 10.0.22631.5768 |
| microsoft | windows_11_version_23h2 | >= 10.0.22631.0 < 10.0.22631.5768 | 10.0.22631.5768 |
| microsoft | windows_11_version_24h2 | >= 10.0.26100.0 < 10.0.26100.4946 | 10.0.26100.4946 |
| microsoft | windows_server_2016 | < 10.0.14393.8330 | 10.0.14393.8330 |
| microsoft | windows_server_2016 | >= 10.0.14393.0 < 10.0.14393.8330 | 10.0.14393.8330 |
| microsoft | windows_server_2019 | < 10.0.17763.7678 | 10.0.17763.7678 |
| microsoft | windows_server_2019 | >= 10.0.17763.0 < 10.0.17763.7678 | 10.0.17763.7678 |
| microsoft | windows_server_2022 | < 10.0.20348.3989 | 10.0.20348.3989 |
| microsoft | windows_server_2022 | >= 10.0.20348.0 < 10.0.20348.4052 | 10.0.20348.4052 |
| microsoft | windows_server_2022_23h2 | < 10.0.25398.1791 | 10.0.25398.1791 |
| microsoft | windows_server_2025 | < 10.0.26100.4851 | 10.0.26100.4851 |
| microsoft | windows_server_2025 | >= 10.0.26100.0 < 10.0.26100.4946 | 10.0.26100.4946 |
| msrc | windows_10_version_1607_for_x64-based_systems | — | — |
GHSA
GHSA-ppcc-7hrx-r7pf: Missing synchronization in Windows Hyper-V allows an authorized attacker to deny service over an adjacent network
ghsa_unreviewed·2025-08-12
CVE-2025-49751 [MEDIUM] CWE-820 GHSA-ppcc-7hrx-r7pf: Missing synchronization in Windows Hyper-V allows an authorized attacker to deny service over an adjacent network
Missing synchronization in Windows Hyper-V allows an authorized attacker to deny service over an adjacent network.
Microsoft
Windows Hyper-V Denial of Service Vulnerability
vendor_msrc·2025-08-12·CVSS 6.8
CVE-2025-49751 [MEDIUM] CWE-820 Windows Hyper-V Denial of Service Vulnerability
Windows Hyper-V Denial of Service Vulnerability
Description: Missing synchronization in Windows Hyper-V allows an authorized attacker to deny service over an adjacent network.
FAQ: 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.
FAQ: 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 networ
No detection rules found.
No public exploits indexed.
2025-08-12
Published