{"id":"CVE-2026-66798","aliases":["EUVD-2026-67851","GHSA-c27v-65fh-7pg2"],"status":"published","title":"Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability","description":"Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.","severity":{"version":"3.1","score":4.3,"vector":"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","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00786,"percentile":0.56444,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-416"],"published":"2026-08-28T17:45:34Z","modified":"2026-11-10T22:01:08Z","products":[{"vendor":"microsoft","product":"edge_chromium"},{"vendor":"microsoft","product":"microsoft edge (chromium-based)"},{"vendor":"microsoft","product":"microsoft edge for android"},{"vendor":"microsoft","product":"microsoft edge for ios"},{"vendor":"microsoft","product":"microsoft edge for linux"},{"vendor":"microsoft","product":"microsoft edge for mac"},{"vendor":"microsoft","product":"microsoft edge for windows"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66798","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-66798"},{"url":"https://github.com/advisories/GHSA-c27v-65fh-7pg2"}],"sources":{"cve":[{"id":"CVE-2026-66798","title":"Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability","description":"Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-08-28T17:45:34.181Z","modified":"2026-11-10T22:01:08.682Z","cvss":[{"version":"3.1","score":4.3,"vector":"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","level":"medium","assessor":"cna"}],"cwes":["CWE-416"],"updated_at":"2026-11-10T23:49:30.334266Z"}],"euvd":[{"id":"EUVD-2026-67851","description":"Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-08-28T17:45:34Z","modified":"2026-11-10T22:01:08Z","cvss":[{"version":"3.1","score":4.3,"vector":"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","level":"medium"}],"updated_at":"2026-11-10T23:24:16.163953Z"}],"ghsa":[{"id":"GHSA-c27v-65fh-7pg2","title":"Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code...","description":"Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-08-28T21:31:16Z","modified":"2026-08-28T21:31:24Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T15:11:08.095363Z"}],"nvd":[{"id":"CVE-2026-66798","description":"Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-08-28T20:19:34.673Z","modified":"2026-10-28T21:17:13.813Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L","level":"medium","assessor":"secondary"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T14:12:42.366888Z"}]}}