CVE-2025-21333HighMicrosoft CVSS 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Microsoft security update for CVE-2025-21333 — Windows

Published
January 14, 2025
Last Modified
—

🔗 CVE IDs covered (1)

CVE-2025-21333 →

📋 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-2025-21333. This page also shows what EchelonGraph holds for CVE-2025-21333, 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 products11

  • 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 2022, 23H2 Edition (Server Core installation)
  • Windows Server 2025
  • Windows Server 2025 (Server Core installation)

✅ Updates Microsoft lists: 4 KB articles

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

KB articleUpdateFixed build
KB5049981Security Update10.0.19044.5371
KB5050021Security Update10.0.22621.4751
KB5049981Security Update10.0.19045.5371
KB5050009Security Update10.0.26100.2894
KB5050021Security Update10.0.22631.4751
KB5049984Security Update10.0.25398.1369

🧭 EchelonGraph on CVE-2025-21333

EchelonGraph score
9.0 CRITICAL
CISA KEV
Listed since January 14, 2025
Fix status
A fix is available — apply it.

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

Windows Hyper-V NT Kernel Integration VSP Elevation of Privilege Vulnerability

Published by Microsoft Corporation, the CVE Numbering Authority that assigned CVE-2025-21333, 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 (9)