{"id":"CVE-2021-28465","aliases":["EUVD-2021-15143","GHSA-v7rp-5m26-pxg5"],"status":"published","title":"Web Media Extensions Remote Code Execution Vulnerability","description":"Web Media 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":"2026-11-10","score":0.03663,"percentile":0.89731,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-77","CWE-787"],"published":"2021-05-11T19:11:15Z","modified":"2026-06-17T03:46:24Z","products":[{"vendor":"microsoft","product":"web media extensions"},{"vendor":"microsoft","product":"web_media_extensions"}],"references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-28465","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-21-572/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-21-579/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-28465"},{"url":"https://github.com/advisories/GHSA-v7rp-5m26-pxg5"}],"sources":{"cve":[{"id":"CVE-2021-28465","title":"Web Media Extensions Remote Code Execution Vulnerability","description":"Web Media Extensions Remote Code Execution Vulnerability","status":"published","published":"2021-05-11T19:11:15Z","modified":"2026-05-28T19:33:13.141Z","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":"2026-11-02T14:33:08.811269Z"}],"euvd":[{"id":"EUVD-2021-15143","description":"Web Media Extensions Remote Code Execution Vulnerability","status":"published","published":"2021-05-11T19:11:15Z","modified":"2026-05-28T19:33:13Z","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":"2026-11-02T18:21:01.680356Z"}],"ghsa":[{"id":"GHSA-v7rp-5m26-pxg5","title":"Web Media Extensions Remote Code Execution Vulnerability","description":"Web Media Extensions Remote Code Execution Vulnerability","status":"published","published":"2022-05-24T19:02:04Z","modified":"2023-08-10T05:04:46Z","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"}],"cwes":["CWE-77","CWE-787"],"updated_at":"2026-11-02T14:54:44.654498Z"}],"nvd":[{"id":"CVE-2021-28465","description":"Web Media Extensions Remote Code Execution Vulnerability","status":"published","published":"2021-05-11T19:15:09.06Z","modified":"2026-06-17T03:46:24.617Z","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"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:06:53.343329Z"}]}}