CVE tracker / CVE-2025-62461

CVE-2025-62461

CVE-2025-62461 is the Windows Projected File System Elevation of Privilege Vulnerability. Microsoft rates it Important, CVSS 7.8. It is not in CISA's Known Exploited Vulnerabilities catalog. Published December 9, 2025.

Risk summary

HighElevation of Privilege

7.8

CVSS v3 base

0.4%

EPSS: chance of exploitation in 30 days

High

Severity

Important

Microsoft's rating

Less Likely

Microsoft: exploitation

In CISA KEV

Microsoft describes it: “Buffer over-read in Windows Projected File System Filter Driver allows an authorized attacker to elevate privileges locally.”

How to fix it

Microsoft lists 21 affected products and the update that fixes each:

KB5071417 · fixed build 10.0.22631.6345
Windows 11 Version 23H2 for x64-based Systems, Windows 11 Version 23H2 for ARM64-based Systems
KB5071542 · fixed build 10.0.25398.2025
Windows Server 2022, 23H2 Edition (Server Core installation)
KB5071544 · fixed build 10.0.17763.8146
Windows Server 2019 (Server Core installation), Windows Server 2019, Windows 10 Version 1809 for x64-based Systems, Windows 10 Version 1809 for 32-bit Systems
KB5071546 · fixed build 10.0.19045.6691, 10.0.19044.6691
Windows 10 Version 22H2 for 32-bit Systems, Windows 10 Version 22H2 for ARM64-based Systems, Windows 10 Version 22H2 for x64-based Systems, Windows 10 Version 21H2 for x64-based Systems, Windows 10 Version 21H2 for ARM64-based Systems, and 1 more
KB5071547 · fixed build 10.0.20348.4529
Windows Server 2022 (Server Core installation), Windows Server 2022
KB5072033 · fixed build 10.0.26100.7462, 10.0.26200.7462
Windows Server 2025, Windows 11 Version 24H2 for x64-based Systems, Windows 11 Version 24H2 for ARM64-based Systems, Windows Server 2025 (Server Core installation), Windows 11 Version 25H2 for x64-based Systems, and 1 more

What Microsoft changed

December 9, 2025: Information published.

Details

Weakness: CWE-126: Buffer Over-read
Publicly disclosed (Microsoft): No
Exploited (Microsoft): No
Known exploited (CISA KEV): Not listed
Published: December 9, 2025
Last revised: December 9, 2025

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References

Microsoft Security Update Guide NVD CVE record CWE

From Microsoft, CISA, NVD and FIRST data; the Microsoft details were read when this page was opened. Check the references above before you act.