CVE-2026-83504: Time-of-check time-of-use (toctou) race condition in Windows SmartScreen allows an authorized attacker to disclose information locally.

PriorityP424medium4.7CVSS 3.1

AVLACHPRLUINSUCHINAN

EPSS

0.28%

20.0th percentile

Time-of-check time-of-use (toctou) race condition in Windows SmartScreen allows an authorized attacker to disclose information locally.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
microsoft	windows_11_version_23h2	>= 10.0.22631.0 < 10.0.22631.7582	10.0.22631.7582
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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