CVE-2025-30400: Microsoft Windows DWM Core Library Use-After-Free Vulnerability

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: yes — in CISA KEV since 2025-05-13
EPSS: 1.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-05-13 · updated 2026-06-17
Weakness: CWE-416

Description

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

Affected products

Microsoft Windows 10: before 10.0.17763.7314 — fixed in 10.0.17763.7314
Microsoft Windows 10: before 10.0.19044.5854 — fixed in 10.0.19044.5854
Microsoft Windows 10: before 10.0.19045.5854 — fixed in 10.0.19045.5854
Microsoft Windows 11: before 10.0.22621.5335 — fixed in 10.0.22621.5335
Microsoft Windows 11: before 10.0.22631.5335 — fixed in 10.0.22631.5335
Microsoft Windows 11: before 10.0.26100.3981 — fixed in 10.0.26100.3981
Microsoft Windows Server 2019: before 10.0.17763.7314 — fixed in 10.0.17763.7314
Microsoft Windows Server 2022: before 10.0.20348.3692 — fixed in 10.0.20348.3692
Microsoft Windows Server 2022, 23H2 Edition (Server Core installation): before 10.0.25398.1611 — fixed in 10.0.25398.1611
Microsoft Windows Server 2025: before 10.0.26100.3981 — fixed in 10.0.26100.3981

How to fix

Upgrade to a fixed version: Microsoft Windows 10 10.0.17763.7314; Microsoft Windows 10 10.0.19044.5854; Microsoft Windows 10 10.0.19045.5854; Microsoft Windows 11 10.0.22621.5335; Microsoft Windows 11 10.0.22631.5335; Microsoft Windows 11 10.0.26100.3981; Microsoft Windows Server 2019 10.0.17763.7314; Microsoft Windows Server 2022 10.0.20348.3692; Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.1611; Microsoft Windows Server 2025 10.0.26100.3981. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2025-30400 or the next vulnerability affects your stack