CVE-2026-25189: Windows DWM Core Library Elevation of Privilege Vulnerability

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-03-10 · updated 2026-06-19
Weakness: CWE-416

Description

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

Affected products

Microsoft Windows 10: before 10.0.17763.8511 — fixed in 10.0.17763.8511
Microsoft Windows 10: before 10.0.19044.7058 — fixed in 10.0.19044.7058
Microsoft Windows 10: before 10.0.19045.7058 — fixed in 10.0.19045.7058
Microsoft Windows Server 2019: before 10.0.17763.8511 — fixed in 10.0.17763.8511
Microsoft Windows Server 2022: before 10.0.20348.4830 — fixed in 10.0.20348.4830
Microsoft Windows 10: from 10.0.17763.0 before 10.0.17763.8511 — fixed in 10.0.17763.8511
Microsoft Windows 10: from 10.0.19044.0 before 10.0.19044.7058 — fixed in 10.0.19044.7058
Microsoft Windows 10: from 10.0.19045.0 before 10.0.19045.7058 — fixed in 10.0.19045.7058
Microsoft Windows Server 2019: from 10.0.17763.0 before 10.0.17763.8511 — fixed in 10.0.17763.8511
Microsoft Windows Server 2022: from 10.0.20348.0 before 10.0.20348.4893 — fixed in 10.0.20348.4893

How to fix

Upgrade to a fixed version: Microsoft Windows 10 10.0.17763.8511; Microsoft Windows 10 10.0.19044.7058; Microsoft Windows 10 10.0.19045.7058; Microsoft Windows Server 2019 10.0.17763.8511; Microsoft Windows Server 2022 10.0.20348.4830; Microsoft Windows 10 10.0.17763.8511; Microsoft Windows 10 10.0.19044.7058; Microsoft Windows 10 10.0.19045.7058; Microsoft Windows Server 2019 10.0.17763.8511; Microsoft Windows Server 2022 10.0.20348.4893. Check the vendor advisory for mitigations.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-25189

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