CVE-2025-47999 describes a Windows Hyper-V Denial of Service (DoS) vulnerability. The vulnerability arises from missing synchronization in Hyper-V, which allows an authorized attacker to cause a denial of service (crash or unavailability of service) over an adjacent network. This means that the attacker needs to have some level of access to the same local network or be a legitimate user of the Hyper-V environment.
Key points:
- Affected Component: Windows Hyper-V
- Impact: Denial of Service (DoS)
- Attack Vector: Adjacent network (not remote over the Internet; attacker must be nearby or on the same network)
- Attacker Prerequisite: Must be authorized (likely already has some access or credentials to the Hyper-V environment)
- Vulnerability Cause: Missing synchronization in the Hyper-V software
Details on patches, workarounds, or mitigation are often published on the Microsoft Security Response Center (MSRC) page for CVE-2025-47999:
MSRC CVE-2025-47999
If you need information on affected versions, exploitability, or official fix status, you should regularly check the MSRC page or your Windows Update dashboard.
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Source: MSRC Security Update Guide - Microsoft Security Response Center