{"id":"CVE-2021-42311","aliases":["EUVD-2021-29286","GHSA-p693-2vfq-fpvw"],"status":"published","title":"Microsoft Defender for IoT Remote Code Execution Vulnerability","description":"Microsoft Defender for IoT Remote Code Execution Vulnerability","severity":{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.04423,"percentile":0.9148,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-89","CWE-94"],"published":"2021-12-15T14:14:57Z","modified":"2026-06-17T04:09:37Z","products":[{"vendor":"microsoft","product":"defender_for_iot"},{"vendor":"microsoft","product":"microsoft defender for iot"}],"references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42311","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-21-1556/","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","VDB Entry"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-42311"},{"url":"https://github.com/advisories/GHSA-p693-2vfq-fpvw"}],"sources":{"cve":[{"id":"CVE-2021-42311","title":"Microsoft Defender for IoT Remote Code Execution Vulnerability","description":"Microsoft Defender for IoT Remote Code Execution Vulnerability","status":"published","published":"2021-12-15T14:14:57Z","modified":"2024-08-04T03:30:38.362Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"critical","assessor":"cna"}],"updated_at":"2026-11-02T14:32:58.739039Z"}],"euvd":[{"id":"EUVD-2021-29286","description":"Microsoft Defender for IoT Remote Code Execution Vulnerability","status":"published","published":"2021-12-15T14:14:57Z","modified":"2024-08-04T03:30:38Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"critical"}],"updated_at":"2026-11-03T03:24:16.217613Z"}],"ghsa":[{"id":"GHSA-p693-2vfq-fpvw","title":"Microsoft Defender for IoT Remote Code Execution Vulnerability This CVE ID is unique from CVE...","description":"Microsoft Defender for IoT Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-41365, CVE-2021-42310, CVE-2021-42313, CVE-2021-42314, CVE-2021-42315, CVE-2021-43882, CVE-2021-43889.","status":"published","published":"2021-12-16T00:02:06Z","modified":"2023-12-28T00:30:19Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-89","CWE-94"],"updated_at":"2026-11-02T14:55:16.928981Z"}],"nvd":[{"id":"CVE-2021-42311","description":"Microsoft Defender for IoT Remote Code Execution Vulnerability","status":"published","published":"2021-12-15T15:15:09.06Z","modified":"2026-06-17T04:09:37.717Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"secondary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"},{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-89"],"updated_at":"2026-11-02T14:07:02.189991Z"}]}}