{"id":"CVE-2026-66321","title":"Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability","summary":"Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.","severity":"high","cvss":7.4,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C","cvssSource":"cna","cwe":["CWE-843"],"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":"total","timestamp":"2026-08-04T00:00:00+00:00"},"published":"2026-08-03","updated":"2026-09-17","sourceUpdated":"2026-09-17T22:28:28.063Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-66321","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66321","label":"Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability"}],"tags":["cve.org"],"epss":0.00548,"epssPercentile":0.44554,"ingestedAt":"2026-09-08T17:06:31.933Z","slug":"CVE-2026-66321","body":"## Overview\n\nAccess of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code 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":"twilight","depthScore":41,"depthScoreParts":{"impact":40.7,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}