CVE-2025-49751 Windows Hyper-V Denial of Service Vulnerability
An authorized attacker can cause a denial of service in Windows Hyper-V due to missing synchronization, affecting adjacent network users.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-49751?
CVE-2025-49751 is a medium-severity vulnerability in Microsoft Windows 10 1607, published on 12 Aug 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Missing synchronization in Windows Hyper-V allows an authorized attacker to deny service over an adjacent network.
Weakness: CWE-820
Which versions are affected by CVE-2025-49751?
It affects 12 products.
Products include Microsoft Windows 10 1607, Microsoft Windows 10 1809, Microsoft Windows 10 21h2, Microsoft Windows 10 22h2, Microsoft Windows 11 22h2, Microsoft Windows 11 23h2 and 6 more.
How do I fix CVE-2025-49751?
No fix has been published for CVE-2025-49751 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-49751 being exploited?
There is no known exploitation of CVE-2025-49751 in the wild and no public exploit code.
Other vulnerabilities in Microsoft Windows 10 1607
- CVE-2026-33824 Microsoft Internet Key Exchange (IKE) Service Extensions Double Free
- CVE-2026-21510 Microsoft Windows Shell Protection Mechanism Failure
- CVE-2026-21513 Microsoft MSHTML Framework Protection Mechanism Failure
- CVE-2023-32049 Microsoft Windows Defender SmartScreen Security Feature Bypass
- CVE-2023-29360 Microsoft Streaming Service Untrusted Pointer Dereference
Sources
Also known as GHSA-ppcc-7hrx-r7pf.