{"id":"CVE-2021-31967","aliases":["EUVD-2021-18839","GHSA-h532-f87j-947q"],"status":"published","title":"VP9 Video Extensions Remote Code Execution Vulnerability","description":"VP9 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":"2026-11-09","score":0.0253,"percentile":0.85021,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2021-06-08T22:46:32Z","modified":"2026-06-17T03:52:35Z","products":[{"vendor":"microsoft","product":"vp9 video extensions"},{"vendor":"microsoft","product":"vp9_video_extensions"}],"references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31967","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-31967"},{"url":"https://github.com/advisories/GHSA-h532-f87j-947q"}],"sources":{"cve":[{"id":"CVE-2021-31967","title":"VP9 Video Extensions Remote Code Execution Vulnerability","description":"VP9 Video Extensions Remote Code Execution Vulnerability","status":"published","published":"2021-06-08T22:46:32Z","modified":"2024-08-03T23:10:31.339Z","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":"2026-11-02T14:33:05.331617Z"}],"euvd":[{"id":"EUVD-2021-18839","description":"VP9 Video Extensions Remote Code Execution Vulnerability","status":"published","published":"2021-06-08T22:46:32Z","modified":"2024-08-03T23:10:31Z","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":"2026-11-03T03:24:37.407491Z"}],"ghsa":[{"id":"GHSA-h532-f87j-947q","title":"VP9 Video Extensions Remote Code Execution Vulnerability","description":"VP9 Video Extensions Remote Code Execution Vulnerability","status":"published","published":"2022-05-24T19:04:47Z","modified":"2023-08-10T05:04:37Z","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":"2026-11-02T14:54:44.654498Z"}],"nvd":[{"id":"CVE-2021-31967","description":"VP9 Video Extensions Remote Code Execution Vulnerability","status":"published","published":"2021-06-08T23:15:09.107Z","modified":"2026-06-17T03:52:35.61Z","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":8.8,"vector":"CVSS:3.1/AV:N/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":"2026-11-02T14:06:54.439974Z"}]}}