Windows MIDI Service Module Stack-Based Buffer Overflow

Publication date: 2026-09-08

Last updated on: 2026-09-23

Assigner: Microsoft Corporation

Description

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

CVSS Scores

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Meta Information

Published

2026-09-08

Last Modified

2026-09-23

Generated

2026-09-29

AI Q&A

2026-09-09

EPSS Evaluated

2026-09-27

NVD

CVE-2026-69508

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows_11_24h2	to 10.0.26100.9445 (exc)
microsoft	windows_11_25h2	to 10.0.26200.9445 (exc)
microsoft	windows_11_25h2	to 10.0.26200.9445 (exc)
microsoft	windows_11_26h1	to 10.0.28000.2954 (exc)
microsoft	windows_11_26h1	to 10.0.28000.2954 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-121	A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

Attack-Flow Graph

Executive Summary

This is a stack-based buffer overflow in the Windows MIDI Service Module. It allows an authorized attacker to elevate their privileges locally by exploiting a flaw that overwrites memory on the stack.

Impact Analysis

An attacker could exploit this to gain higher-level permissions on your system, potentially allowing them to install programs, view or delete data, or create new accounts with full user rights.

Mitigation Strategies

Apply the latest security updates from Microsoft to patch the Windows MIDI Service Module. Monitor Microsoft's update guide for patches and install them promptly.

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