{"id":"CVE-2021-1647","aliases":["EUVD-2021-7114","GHSA-4v4q-r2mh-q7w6"],"status":"published","title":"Microsoft Defender Remote Code Execution Vulnerability","description":"Microsoft Defender Remote Code Execution Vulnerability","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.39653,"percentile":0.98637,"model":"v2026.06.15"},"facts":{"in_kev":true,"known_exploited":true,"public_exploit":true,"fix_available":false},"cwes":["CWE-122","CWE-1285","CWE-131","CWE-20"],"published":"2021-01-12T19:42:01Z","modified":"2026-06-17T03:32:13Z","kev":{"date_added":"2021-11-03","due_date":"2021-11-17","required_action":"Apply updates per vendor instructions.","known_ransomware_use":"Unknown"},"exploitation":[{"source":"euvd","since":"2021-11-03"},{"source":"kev","since":"2021-11-03"}],"exploits":[{"source":"pocgithub","id":"findcool/cve-2021-1647","title":"findcool/cve-2021-1647","date":"2021-01-23","url":"https://github.com/findcool/cve-2021-1647"}],"products":[{"vendor":"microsoft","product":"defender"},{"vendor":"microsoft","product":"microsoft security essentials"},{"vendor":"microsoft","product":"microsoft system center 2012 endpoint protection"},{"vendor":"microsoft","product":"microsoft system center 2012 r2 endpoint protection"},{"vendor":"microsoft","product":"microsoft system center endpoint protection"},{"vendor":"microsoft","product":"security_essentials"},{"vendor":"microsoft","product":"system_center_endpoint_protection"},{"vendor":"microsoft","product":"windows defender"},{"vendor":"microsoft","product":"windows_defender"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-1647","tags":["vendor-advisory","Patch","Vendor Advisory"]},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1647","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-1647","tags":["government-resource","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-1647"},{"url":"https://github.com/advisories/GHSA-4v4q-r2mh-q7w6"}],"sources":{"cve":[{"id":"CVE-2021-1647","title":"Microsoft Defender Remote Code Execution Vulnerability","description":"Microsoft Defender Remote Code Execution Vulnerability","status":"published","published":"2021-01-12T19:42:01Z","modified":"2025-10-21T23:35:30.058Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C","level":"high","assessor":"cna"}],"updated_at":"2026-11-02T14:33:08.045407Z"}],"euvd":[{"id":"EUVD-2021-7114","description":"Microsoft Defender Remote Code Execution Vulnerability","status":"published","published":"2021-01-12T19:42:01Z","modified":"2025-10-21T23:35:30Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C","level":"high"}],"exploited_since":"2021-11-03","updated_at":"2026-11-02T20:31:25.308373Z"}],"ghsa":[{"id":"GHSA-4v4q-r2mh-q7w6","title":"Microsoft Defender Remote Code Execution Vulnerability","description":"Microsoft Defender Remote Code Execution Vulnerability","status":"published","published":"2022-05-24T17:38:44Z","modified":"2025-10-22T00:33:02Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-20","CWE-131"],"updated_at":"2026-11-02T15:04:07.112106Z"}],"kev":[{"id":"CVE-2021-1647","title":"Microsoft Defender Remote Code Execution Vulnerability","description":"Microsoft Defender contains an unspecified vulnerability that allows for remote code execution.","cwes":["CWE-122","CWE-1285"],"kev":{"date_added":"2021-11-03","due_date":"2021-11-17","required_action":"Apply updates per vendor instructions.","known_ransomware_use":"Unknown"},"updated_at":"2026-11-02T17:00:17.050017Z"}],"nvd":[{"id":"CVE-2021-1647","description":"Microsoft Defender Remote Code Execution Vulnerability","status":"published","published":"2021-01-12T20:15:30.727Z","modified":"2026-06-17T03:32:13.953Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/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:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"2.0","score":7.2,"vector":"AV:L/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:06:49.284888Z"}]}}