CVE-2025-30400

Known Exploited
Microsoft DWM Core Library Elevation of Privilege Vulnerability

Description

Use after free in Windows DWM allows an authorized attacker to elevate privileges locally.

Category

7.8
CVSS
Severity: High
CVSS 3.1 •
EPSS 3.71% Top 15%
KEV Since 
Vendor Advisory microsoft.com
Affected: Microsoft Windows 10 Version 1809
Affected: Microsoft Windows Server 2019
Affected: Microsoft Windows Server 2019 (Server Core installation)
Affected: Microsoft Windows Server 2022
Affected: Microsoft Windows 10 Version 21H2
Affected: Microsoft Windows 11 version 22H2
Affected: Microsoft Windows 10 Version 22H2
Affected: Microsoft Windows Server 2025 (Server Core installation)
Affected: Microsoft Windows 11 version 22H3
Affected: Microsoft Windows 11 Version 23H2
Affected: Microsoft Windows Server 2022, 23H2 Edition (Server Core installation)
Affected: Microsoft Windows 11 Version 24H2
Affected: Microsoft Windows Server 2025
Published at:
Updated at:

References

Frequently Asked Questions

What is the severity of CVE-2025-30400?
CVE-2025-30400 has been scored as a high severity vulnerability.
How to fix CVE-2025-30400?
To fix CVE-2025-30400, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-30400 being actively exploited in the wild?
It is confirmed that CVE-2025-30400 is actively exploited. Be extra cautious if you are using vulnerable components. According to its EPSS score, there is a ~4% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-30400?
CVE-2025-30400 affects Microsoft Windows 10 Version 1809, Microsoft Windows Server 2019, Microsoft Windows Server 2019 (Server Core installation), Microsoft Windows Server 2022, Microsoft Windows 10 Version 21H2, Microsoft Windows 11 version 22H2, Microsoft Windows 10 Version 22H2, Microsoft Windows Server 2025 (Server Core installation), Microsoft Windows 11 version 22H3, Microsoft Windows 11 Version 23H2, Microsoft Windows Server 2022, 23H2 Edition (Server Core installation), Microsoft Windows 11 Version 24H2, Microsoft Windows Server 2025.
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