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CVE-2026-50342: Windows MIDI Service Module Elevation of Privileges Vulnerability

highCVSS 8.8CVE-2026-50342
Improper access control in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally.

CSIRTS triage

vendor: Microsoftproduct: Windows MIDI Service ModulePrivilege escalation
What
Improper access control in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally.
Who is affected
Deployments of Windows MIDI Service Module.
Urgency
Remediation is high urgency due to the potential for privilege escalation.
Action
Apply patches provided by Microsoft to mitigate this vulnerability.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
high — CVSS 8.8
Published
2026-07-14
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50342

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-50342coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for Windows MIDI Service

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

More from Microsoft Security Response Center