Local privilege escalation through undisclosed access control flaw
Published Jul 14, 2026 · Updated Jul 14, 2026
Improper access control in Microsoft Windows 11 MIDI Service Module allows local users to elevate privileges on affected systems. Microsoft's public advisory identifies neither the access-control decision nor the operation that mishandles attacker-controlled input. Exploitation requires local access and low privileges; success raises the attacker's authority beyond the module's intended security boundary.
Summary
What happened
Improper access control in Microsoft Windows 11 MIDI Service Module allows local users to elevate privileges on affected systems. Microsoft's public advisory identifies neither the access-control decision nor the operation that mishandles attacker-controlled input. Exploitation requires local access and low privileges; success raises the attacker's authority beyond the module's intended security boundary.
The record
- CVE
- CVE-2026-50342
- Published
- Jul 14, 2026
- Updated
- Jul 14, 2026
- Vendor
- Microsoft
- Product
- Windows 11, version 25H2
- Classifications
- CWE-284, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 14, 2026CVE publishedPublication date reported by the CVE source.
- Jul 14, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=10.0.26200.0 <10.0.26100.8875
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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