{"id":"CVE-2021-1643","aliases":["EUVD-2021-7110","GHSA-3m8h-6gm5-g2hj"],"status":"published","title":"HEVC Video Extensions Remote Code Execution Vulnerability","description":"HEVC Video Extensions Remote Code Execution Vulnerability","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.04198,"percentile":0.91021,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2021-01-12T19:41:58Z","modified":"2026-06-17T03:32:13Z","products":[{"vendor":"microsoft","product":"hevc video extensions"},{"vendor":"microsoft","product":"hevc_video_extensions"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-1643","tags":["vendor-advisory"]},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1643","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-1643"},{"url":"https://github.com/advisories/GHSA-3m8h-6gm5-g2hj"}],"sources":{"cve":[{"id":"CVE-2021-1643","title":"HEVC Video Extensions Remote Code Execution Vulnerability","description":"HEVC Video Extensions Remote Code Execution Vulnerability","status":"published","published":"2021-01-12T19:41:58Z","modified":"2024-10-08T16:17:36.398Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C","level":"high","assessor":"cna"}],"updated_at":"2026-11-02T14:33:08.409321Z"}],"euvd":[{"id":"EUVD-2021-7110","description":"HEVC Video Extensions Remote Code Execution Vulnerability","status":"published","published":"2021-01-12T19:41:58Z","modified":"2024-10-08T16:17:36Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-03T00:27:45.386789Z"}],"ghsa":[{"id":"GHSA-3m8h-6gm5-g2hj","title":"HEVC Video Extensions Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-1644.","description":"HEVC Video Extensions Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-1644.","status":"published","published":"2022-05-24T17:38:44Z","modified":"2024-10-08T18:34:02Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T14:58:27.293589Z"}],"nvd":[{"id":"CVE-2021-1643","description":"HEVC Video Extensions Remote Code Execution Vulnerability","status":"published","published":"2021-01-12T20:15:30.477Z","modified":"2026-06-17T03:32:13.457Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"2.0","score":9.3,"vector":"AV:N/AC:M/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:06:49.284888Z"}]}}