CVE-2026-83504

Name of the Vulnerable Software and Affected Versions Windows SmartScreen (affected versions not specified)

Description A time-of-check time-of-use (toctou) race condition exists in Windows SmartScreen. This occurs when a program checks a condition (such as a security permission) and then uses the result of that check, but the condition changes between the check and the use. This flaw allows an authorized attacker to disclose sensitive information locally and affect the system.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.