{"id":"CVE-2026-83504","title":"Time-of-check time-of-use (toctou) race condition in Windows SmartScreen allows an authorized attacker to disclose information locally.","summary":"Time-of-check time-of-use (toctou) race condition in Windows SmartScreen allows an authorized attacker to disclose information locally.","severity":"medium","cvss":4.7,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-367"],"published":"2026-10-13","updated":"2026-10-13","sourceUpdated":"2026-10-13T21:18:22.850","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-83504","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83504","label":"secure@microsoft.com"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-13T19:43:29.058Z","vendor":"Microsoft","product":"Windows 11 version 23H2","affected":["windows_11_version_23h2 >= 10.0.22631.0 < 10.0.22631.7582","windows_11_version_23h2 >= 10.0.22631.0 < 10.0.22631.7582","windows_11_version_24h2 >= 10.0.26100.0 < 10.0.26100.9445","windows_11_version_25h2 >= 10.0.26200.0 < 10.0.26200.9445","windows_11_version_26h1 >= 10.0.28000.0 < 10.0.28000.2954"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-13T20:41:47.893597Z"},"epss":0.00278,"epssPercentile":0.20065,"slug":"CVE-2026-83504","body":"## Overview\n\nTime-of-check time-of-use (toctou) race condition in Windows SmartScreen allows an authorized attacker to disclose information locally.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":26,"depthScoreParts":{"impact":25.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}