CVE-2026-61932: 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: 2026-08-11 · updated 2026-10-30
Weakness: CWE-843

Description

Access of resource using incompatible type ('type confusion') in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

Affected products

Microsoft Windows 10 1607: before 10.0.14393.9418 — fixed in 10.0.14393.9418
Microsoft Windows 10: before 10.0.17763.9115 — fixed in 10.0.17763.9115
Microsoft Windows 10: before 10.0.19044.7663 — fixed in 10.0.19044.7663
Microsoft Windows 10: before 10.0.19045.7663 — fixed in 10.0.19045.7663
Microsoft Windows 11: before 10.0.22631.7517 — fixed in 10.0.22631.7517
Microsoft Windows Server 2016: before 10.0.14393.9418 — fixed in 10.0.14393.9418
Microsoft Windows Server 2019: before 10.0.17763.9115 — fixed in 10.0.17763.9115
Microsoft Windows Server 2022: before 10.0.20348.5440 — fixed in 10.0.20348.5440
Microsoft Windows 10 1607: from 10.0.14393.0 before 10.0.14393.9418 — fixed in 10.0.14393.9418
Microsoft Windows 10: from 10.0.17763.0 before 10.0.17763.9121 — fixed in 10.0.17763.9121
Microsoft Windows 10: from 10.0.19044.0 before 10.0.19044.7663 — fixed in 10.0.19044.7663
Microsoft Windows 10: from 10.0.19045.0 before 10.0.19045.7663 — fixed in 10.0.19045.7663
Microsoft Windows 11: from 10.0.22631.0 before 10.0.22631.7517 — fixed in 10.0.22631.7517
Microsoft Windows Server 2016: from 10.0.14393.0 before 10.0.14393.9418 — fixed in 10.0.14393.9418
Microsoft Windows Server 2019: from 10.0.17763.0 before 10.0.17763.9121 — fixed in 10.0.17763.9121
Microsoft Windows Server 2022: from 10.0.20348.0 before 10.0.20348.5499 — fixed in 10.0.20348.5499

How to fix

Upgrade to a fixed version: Microsoft Windows 10 1607 10.0.14393.9418; Microsoft Windows 10 10.0.17763.9115; Microsoft Windows 10 10.0.19044.7663; Microsoft Windows 10 10.0.19045.7663; Microsoft Windows 11 10.0.22631.7517; Microsoft Windows Server 2016 10.0.14393.9418; Microsoft Windows Server 2019 10.0.17763.9115; Microsoft Windows Server 2022 10.0.20348.5440; Microsoft Windows 10 1607 10.0.14393.9418; Microsoft Windows 10 10.0.17763.9121; Microsoft Windows 10 10.0.19044.7663; Microsoft Windows 10 10.0.19045.7663. Check the vendor advisory for mitigations.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-61932

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