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, the attack vector is adjacent (AV:A). What does that mean for this vulnerability?
Successful exploitation of this vulnerability requires that an attacker will need to first gain access to the restricted network before running an attack.
According to the CVSS metric, a successful exploitation could lead to a scope change (S:C). What does this mean for this vulnerability?
Successful exploitation of this vulnerability could allow a Hyper-V guest to affect the functionality of the Hyper-V host.
Security updates
10.0.17763.7558 — https://support.microsoft.com/help/5062557
10.0.20348.3932 — https://support.microsoft.com/help/5062572
10.0.19044.6093 — https://support.microsoft.com/help/5062554
10.0.22621.5624 — https://support.microsoft.com/help/5062552
10.0.26100.4652 — https://support.microsoft.com/help/5062553
10.0.25398.1732 — https://support.microsoft.com/help/5062570
10.0.14393.8246 — https://support.microsoft.com/help/5062560
Vulnerabilities 1
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Medium 6.8
Windows Hyper-V Denial of Service Vulnerability
Missing synchronization in Windows Hyper-V allows an authorized attacker to deny service over an adjacent network.
Revision history
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#1
Information published.
References
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CVE-2025-47999 Windows Hyper-V Denial of Service Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-47999
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Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
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Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
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Common Vulnerability Scoring System
https://www.first.org/cvss