CVE-2026-44811: Windows DWM Core Library Elevation of Privilege Vulnerability

Overview

Severity

High (CVSS 7.8)

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Category

Elevation of Privilege

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2026-Jun

Released

2026-06-09

Description

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

FAQ

What privileges could be gained by an attacker who successfully exploited this vulnerability? An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.

Affected Products (2)

Windows

• Windows 11 version 26H1 for x64-based Systems
• Windows 11 Version 26H1 for ARM64-based Systems

Security Updates (1)

• 5095051

Acknowledgments

<a href="https://mylostchristmas.tistory.com/20">Seung Chan Kim</a>, Owen McCullough with Microsoft, Thanatos Tian (HKPolyU) &amp; PB18 &amp; @2st__ with Diffract

Revision History

• 2026-06-09: Information published.