CVE-2026-20811

HIGH

7.8

Description

Access of resource using incompatible type ('type confusion') in Windows Win32K - ICOMP allows an authorized attacker to elevate privileges locally.

CVE Details

CVSS v3.1 Score7.8

SeverityHIGH

CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack VectorLOCAL

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published1/13/2026

Last Modified1/14/2026

Sourcenvd

Honeypot Sightings0

Affected Products

microsoft:windows_11_23h2microsoft:windows_11_24h2microsoft:windows_11_25h2microsoft:windows_server_2022microsoft:windows_server_2022_23h2microsoft:windows_server_2025

Weaknesses (CWE)

CWE-822CWE-843

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20811(secure@microsoft.com)

IOC Correlations

No correlations recorded

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