{"id":"CVE-2021-43221","aliases":["EUVD-2021-30165","GHSA-fp8m-q3h7-6ww8"],"status":"published","title":"Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability","description":"Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability","severity":{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.01151,"percentile":0.67323,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-94"],"published":"2021-11-24T01:05:16Z","modified":"2026-08-19T18:31:45Z","products":[{"vendor":"microsoft","product":"edge_chromium"},{"vendor":"microsoft","product":"microsoft edge (chromium-based)"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-43221","tags":["vendor-advisory","patch"]},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43221","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-43221"},{"url":"https://github.com/advisories/GHSA-fp8m-q3h7-6ww8"}],"sources":{"cve":[{"id":"CVE-2021-43221","title":"Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability","description":"Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability","status":"published","published":"2021-11-24T01:05:16Z","modified":"2026-08-19T16:27:10.005Z","cvss":[{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C","level":"medium","assessor":"cna"}],"updated_at":"2026-11-02T14:32:56.689433Z"}],"euvd":[{"id":"EUVD-2021-30165","description":"Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability","status":"published","published":"2021-11-24T01:05:16Z","modified":"2026-08-19T16:27:10Z","cvss":[{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-02T18:01:43.218519Z"}],"ghsa":[{"id":"GHSA-fp8m-q3h7-6ww8","title":"Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability","description":"Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability","status":"published","published":"2021-11-25T00:00:40Z","modified":"2026-08-19T18:31:45Z","cvss":[{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-94"],"updated_at":"2026-11-02T15:10:40.943268Z"}],"nvd":[{"id":"CVE-2021-43221","description":"Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability","status":"published","published":"2021-11-24T01:15:08.54Z","modified":"2026-08-19T17:18:05.48Z","cvss":[{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":4.2,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N","level":"medium","assessor":"secondary"},{"version":"2.0","score":4,"vector":"AV:N/AC:H/Au:N/C:P/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-94"],"updated_at":"2026-11-02T14:07:01.428028Z"}]}}