{"id":"CVE-2026-66798","title":"Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability","summary":"Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.","severity":"medium","cvss":4.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C","cvssSource":"cna","cwe":["CWE-416"],"vendor":"Microsoft","product":"Microsoft Edge (Chromium-based)","affected":["edge_chromium-based -","edge_for_android >= 1.0.0.0 < 152.0.4191.52","edge_for_ios >= 1.0.0.0 < 152.0.4191.52","edge_for_linux >= 1.0.0 < 152.0.4191.52","edge_for_mac >= 1.0.0.0 < 152.0.4191.52","edge_for_windows >= 1.0.0.0 < 152.0.4191.52"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-08-29T03:56:13.736994Z"},"published":"2026-08-28","updated":"2026-09-16","sourceUpdated":"2026-09-16T16:26:54.236Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-66798","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66798","label":"Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability"}],"tags":["cve.org"],"epss":0.00556,"epssPercentile":0.44952,"ingestedAt":"2026-09-14T00:35:28.548Z","slug":"CVE-2026-66798","body":"## Overview\n\nUse after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.\n\n## Affected\n\n- `edge_chromium-based -`\n- `edge_for_android >= 1.0.0.0 < 152.0.4191.52`\n- `edge_for_ios >= 1.0.0.0 < 152.0.4191.52`\n- `edge_for_linux >= 1.0.0 < 152.0.4191.52`\n- `edge_for_mac >= 1.0.0.0 < 152.0.4191.52`\n- `edge_for_windows >= 1.0.0.0 < 152.0.4191.52`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":24,"depthScoreParts":{"impact":23.7,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}