CVE-2026-69339: Microsoft Windows 11 24h2

Medium severity, CVSS 5.5. EPSS: 0.5% chance of exploitation in the next 30 days.

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

Affected products

• Microsoft Windows 11 24h2: before 10.0.26100.9445 (fixed in 10.0.26100.9445)
• Microsoft Windows 11 25h2: before 10.0.26200.9445 (fixed in 10.0.26200.9445)
• Microsoft Windows 11 26h1: before 10.0.28000.2954 (fixed in 10.0.28000.2954)

Published 2026-09-08. Last modified 2026-09-17.