{"id":"CVE-2026-66314","title":"Microsoft Edge (Chromium-based) Information Disclosure Vulnerability","summary":"Time-of-check time-of-use (toctou) race condition in Microsoft Edge (Chromium-based) allows an unauthorized attacker to disclose information over a network.","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","cvssSource":"cna","cwe":["CWE-367"],"vendor":"Microsoft","product":"Microsoft Edge (Chromium-based)","affected":["edge_chromium-based >= 1.0.0.0 < 151.0.4129.59"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-08-05T14:29:00.845434Z"},"published":"2026-08-03","updated":"2026-09-17","sourceUpdated":"2026-09-17T22:29:41.489Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-66314","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66314","label":"Microsoft Edge (Chromium-based) Information Disclosure Vulnerability"}],"tags":["cve.org"],"epss":0.00324,"epssPercentile":0.2564,"ingestedAt":"2026-09-08T17:06:31.926Z","slug":"CVE-2026-66314","body":"## Overview\n\nTime-of-check time-of-use (toctou) race condition in Microsoft Edge (Chromium-based) allows an unauthorized attacker to disclose information over a network.\n\n## Affected\n\n- `edge_chromium-based >= 1.0.0.0 < 151.0.4129.59`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}