CVE-2026-83773

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Exposure of Sensitive Information in Windows MIDI Service

Publication date: 2026-10-13

Last updated on: 2026-10-13

Assigner: Microsoft Corporation

Description

Exposure of sensitive system information to an unauthorized control sphere in Windows MIDI Service Module allows an authorized attacker to disclose information locally.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-10-13

Last Modified

2026-10-13

Generated

2026-10-19

AI Q&A

2026-10-14

EPSS Evaluated

2026-10-18

NVD

CVE-2026-83773

EUVD

EUVD-2026-99991

Affected Vendors & Products

Vendor	Product	Version / Range
Microsoft	Windows	11 Version 24H2 10.0.26100.0
Microsoft	Windows	11 Version 25H2 10.0.26200.0
Microsoft	Windows	11 version 26H1 10.0.28000.0
Microsoft	Windows	11 Version 26H2 10.0.26300.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-497	The product does not properly prevent sensitive system-level information from being accessed by unauthorized actors who do not have the same level of access to the underlying system as the product does.

Attack-Flow Graph

Executive Summary

This vulnerability involves the Windows MIDI Service Module exposing sensitive system information to an unauthorized control sphere. An authorized attacker could exploit this to locally disclose confidential system data.

Impact Analysis

An attacker with local access could exploit this to steal sensitive system information, potentially leading to further attacks like privilege escalation or data breaches.

Compliance Impact

This vulnerability could lead to unauthorized disclosure of sensitive data, which may violate GDPR or HIPAA requirements for protecting personal or health information.

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 disable the MIDI service if not required.

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