CVE-2026-78464: Time-of-check time-of-use (toctou) race condition in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally.

PriorityP434high7CVSS 3.1

AVLACHPRLUINSUCHIHAH

EPSS

0.20%

9.7th percentile

Time-of-check time-of-use (toctou) race condition in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally.

Affected

6 ranges

Vendor	Product	Version range	Fixed in
microsoft	windows_11_24h2	< 10.0.26100.9445	10.0.26100.9445
microsoft	windows_11_25h2	< 10.0.26200.9445	10.0.26200.9445
microsoft	windows_11_26h1	< 10.0.28000.2954	10.0.28000.2954
microsoft	windows_11_version_24h2	>= 10.0.26100.0 < 10.0.26100.9445	10.0.26100.9445
microsoft	windows_11_version_25h2	>= 10.0.26200.0 < 10.0.26200.9445	10.0.26200.9445
microsoft	windows_11_version_26h1	>= 10.0.28000.0 < 10.0.28000.2954	10.0.28000.2954

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