CVE-2025-49751HighMicrosoft CVSS 6.8CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C

Microsoft security update for CVE-2025-49751 — Windows

Published
August 12, 2025
Last Modified
—

🔗 CVE IDs covered (1)

CVE-2025-49751 →

📋 Microsoft's advisory

EchelonGraph does not copy Microsoft's advisory page: its FAQ and remediation text are not shown here. Read the advisory on https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49751. This page also shows what EchelonGraph holds for CVE-2025-49751, with the description from its CVE record, which the CVE Numbering Authority that assigned the CVE wrote: for a CVE Microsoft assigned, often in the words of Microsoft's own advisory.

🎯 Affected products19

  • Windows 10 Version 1607 for x64-based Systems
  • Windows 10 Version 1809 for x64-based Systems
  • Windows 10 Version 21H2 for x64-based Systems
  • Windows 10 Version 22H2 for x64-based Systems
  • Windows 11 Version 22H2 for ARM64-based Systems
  • Windows 11 Version 22H2 for x64-based Systems
  • Windows 11 Version 23H2 for ARM64-based Systems
  • Windows 11 Version 23H2 for x64-based Systems
  • Windows 11 Version 24H2 for ARM64-based Systems
  • Windows 11 Version 24H2 for x64-based Systems
  • Windows Server 2016
  • Windows Server 2016 (Server Core installation)
  • Windows Server 2019
  • Windows Server 2019 (Server Core installation)
  • Windows Server 2022
  • Windows Server 2022 (Server Core installation)
  • Windows Server 2022, 23H2 Edition (Server Core installation)
  • Windows Server 2025
  • Windows Server 2025 (Server Core installation)

✅ Updates Microsoft lists: 9 KB articles

11 rows: one per KB article or update, update type and fixed build. Their details are on Microsoft's advisory.

KB articleUpdateFixed build
KB5063877Security Update10.0.17763.7678
KB5063880Security Update10.0.20348.4052
KB5063812SecurityHotpatchUpdate10.0.20348.3989
KB5063709Security Update10.0.19044.6216
KB5063875Security Update10.0.22621.5768
KB5063709Security Update10.0.19045.6216
KB5063878Security Update10.0.26100.4946
KB5064010SecurityHotpatchUpdate10.0.26100.4851
KB5063875Security Update10.0.22631.5768
KB5063899Security Update10.0.25398.1791
KB5063871Security Update10.0.14393.8330

🧭 EchelonGraph on CVE-2025-49751

EchelonGraph score
6.8 MEDIUM
CISA KEV
Not listed
Fix status
A fix is available — apply it.

Description from the CVE record (CVE.org), as published by its numbering authority

Missing synchronization in Windows Hyper-V allows an authorized attacker to deny service over an adjacent network.

Published by Microsoft Corporation, the CVE Numbering Authority that assigned CVE-2025-49751, in its CVE record at CVE.org; reused under the CVE Program's Terms of Use (its licence and MITRE's copyright notice are in our Terms of Service).

🔗 References (19)