MSRC-CVE-2026-62688 — Windows MIDI Service Module Elevation of Privileges Vulnerability

Summary

Impact: Elevation of Privilege. Microsoft rating: Important. Not known to be exploited — Exploitation More Likely. Customer action: Required.

Details

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

Security updates
10.0.26200.9168 — https://support.microsoft.com/help/5121003
10.0.26200.9106 — https://support.microsoft.com/help/5120994
10.0.28000.2704 — https://support.microsoft.com/help/5121000

Vulnerabilities 1

High 7.8

CVE-2026-62688

Windows MIDI Service Module Elevation of Privileges Vulnerability

Heap-based buffer overflow in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally.

Microsoft Windows 11 Version 24H2 Windows 11 Version 25H2 Windows 11 version 26H1 Windows

Aug 11, 2026

Revision history

2026-10-14 #6
Updated an acknowledgement. This is an informational change only.
2026-10-09 #5
Updated an acknowledgement. This is an informational change only.
2026-10-06 #4
Updated an acknowledgement. This is an informational change only.
2026-09-29 #3
Updated an acknowledgement. This is an informational change only.
2026-08-13 #2
Acknowledgement Updated
2026-08-11 #1
Information published.

References

CVE-2026-62688 Windows MIDI Service Module Elevation of Privileges Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62688
Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
Common Vulnerability Scoring System
https://www.first.org/cvss