CVE-2026-56187

Analyzed Analyzed - Analysis Complete

Use After Free in Windows MIDI Service Module Allows Privilege Escalation

Publication date: 2026-07-14

Last updated on: 2026-07-23

Assigner: Microsoft Corporation

Description

Use after free in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-07-14

Last Modified

2026-07-23

Generated

2026-08-04

AI Q&A

2026-07-15

EPSS Evaluated

2026-08-03

NVD

CVE-2026-56187

EUVD

EUVD-2026-44244

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows_11_24h2	to 10.0.26100.8875 (exc)
microsoft	windows_11_26h1	to 10.0.28000.2525 (exc)
microsoft	windows_11_25h2	to 10.0.26200.8875 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-416	The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Attack-Flow Graph

Executive Summary

This is a use-after-free vulnerability in the Windows MIDI Service Module. It allows an authorized attacker to elevate their privileges locally by exploiting a memory management flaw where freed memory is accessed again.

Impact Analysis

An attacker could 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.

Compliance Impact

This vulnerability allows local privilege escalation in the Windows MIDI Service Module. While it does not directly impact data confidentiality or integrity, unauthorized privilege escalation could lead to broader system compromise, potentially affecting compliance controls that rely on proper access management and isolation.

Mitigation Strategies

Apply the latest security updates from Microsoft to patch the Windows MIDI Service Module vulnerability. Monitor Microsoft's security advisories for updates and ensure all systems are updated promptly.

Hi! I’m here to help you understand CVE-2026-56187. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70