CVE-2025-49751
Windows Hyper-V Denial of Service Vulnerability
MEDIUM
6.8
CVSS Score
Published: August 12, 2025 at 05:09 PM UTC
Updated: June 17, 2026 at 09:31 AM UTC
13 products affected across 1 vendorWindows Server 2016Windows Server 2019Windows 10 1809
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Severity
MEDIUM6.8
Exploit prediction
EPSS 0.5%
SSVC
No known exploit
Description
Missing synchronization in Windows Hyper-V allows an authorized attacker to deny service over an adjacent network.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Affected range stops below 10.0.14393.8330, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.0.17763.7678, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.0.19044.6216, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.0.19045.6216, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.0.22621.5768, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.0.22631.5768, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.0.26100.4851, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.0.26100.4946, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.0.14393.8330, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.0.17763.7678, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.0.20348.3989, so it looks safe — our inference, not a vendor statement
Affected range stops below 10.0.20348.4052, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (1)
Vendor AdvisoryPatch
Source: [email protected]
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49751SSVC — Action Prioritization
SSVCNo known exploitNot automatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
6.8MEDIUMmicrosoft
Vector?
Quick Info
StatusANALYZED
CWE
CWE-820
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