CVE-2026-50342: Windows MIDI Service Module Elevation of Privileges Vulnerability

Overview

Severity

High (CVSS 8.8)

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/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-Jul

Released

2026-07-14

Description

Improper access control in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally.

Affected Products (6)

Windows

• Windows 11 Version 25H2 for ARM64-based Systems
• Windows 11 Version 25H2 for x64-based Systems
• Windows 11 Version 24H2 for ARM64-based Systems
• Windows 11 Version 24H2 for x64-based Systems
• Windows 11 version 26H1 for x64-based Systems
• Windows 11 Version 26H1 for ARM64-based Systems

Security Updates (3)

• 5101650
• 5095051
• 5101649

Acknowledgments

<a href="https://github.com/cbwang505">ChengBin Wang</a> with <a href="https://www.guolisec.com/">ZheJiang Guoli Security Technology</a>

Revision History

• 2026-07-14: Information published.