{"id":"CVE-2021-40453","aliases":["EUVD-2021-27630","GHSA-h53x-f2fm-7w73"],"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:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.02335,"percentile":0.83796,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2021-12-15T14:14:51Z","modified":"2026-06-17T04:06:56Z","products":[{"vendor":"microsoft","product":"hevc video extensions"},{"vendor":"microsoft","product":"hevc_video_extensions"}],"references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-40453","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-40453"},{"url":"https://github.com/advisories/GHSA-h53x-f2fm-7w73"}],"sources":{"cve":[{"id":"CVE-2021-40453","title":"HEVC Video Extensions Remote Code Execution Vulnerability","description":"HEVC Video Extensions Remote Code Execution Vulnerability","status":"published","published":"2021-12-15T14:14:51Z","modified":"2024-08-04T02:44:10.345Z","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:U/RL:O/RC:C","level":"high","assessor":"cna"}],"updated_at":"2026-11-02T14:33:01.852999Z"}],"euvd":[{"id":"EUVD-2021-27630","description":"HEVC Video Extensions Remote Code Execution Vulnerability","status":"published","published":"2021-12-15T14:14:51Z","modified":"2024-08-04T02:44:10Z","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:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-03T03:24:20.862157Z"}],"ghsa":[{"id":"GHSA-h53x-f2fm-7w73","title":"HEVC Video Extensions Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021...","description":"HEVC Video Extensions Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-40452, CVE-2021-41360.","status":"published","published":"2021-12-16T00:02:11Z","modified":"2023-12-28T00:30:16Z","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":"2026-11-02T14:55:16.928981Z"}],"nvd":[{"id":"CVE-2021-40453","description":"HEVC Video Extensions Remote Code Execution Vulnerability","status":"published","published":"2021-12-15T15:15:08.673Z","modified":"2026-06-17T04:06:56.9Z","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":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:07:02.189991Z"}]}}