What is CVE-2026-50342?

CVE-2026-50342 is a high-severity vulnerability in Microsoft Windows 11 Version 24h2, classified under Improper Access Control. CVSS score: 8.8/10. Published 2026-07-14.

How severe is CVE-2026-50342?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Microsoft Windows 11 Version 24h2

CVE-2026-50342

Improper access control in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Microsoft Windows 11 Version 24h2 — versions 10.0.26100.0
Microsoft Windows 11 Version 25h2 — versions 10.0.26200.0
Microsoft Windows 11 Version 26h1 — versions 10.0.28000.0

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

secure@microsoft.com (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-50342?: CVE-2026-50342 is a high-severity vulnerability in Microsoft Windows 11 Version 24h2, classified under Improper Access Control. CVSS score: 8.8/10. Published 2026-07-14.
How severe is CVE-2026-50342?: High severity. CVSS v3 base score is 8.8 out of 10.