{"id":"CVE-2021-20617","aliases":["EUVD-2021-8035","GHSA-6456-hr4p-p4pq"],"status":"published","title":"Improper access control vulnerability in acmailer ver. 4.0.1 and earlier, and acmailer DB ver. 1...","description":"Improper access control vulnerability in acmailer ver. 4.0.1 and earlier, and acmailer DB ver. 1.1.3 and earlier allows remote attackers to execute an arbitrary OS command, or gain an administrative privilege which may result in obtaining the sensitive information on the server via unspecified vectors.","severity":{"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":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.07413,"percentile":0.94516,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-269"],"published":"2021-01-14T08:20:16Z","modified":"2026-06-17T03:34:07Z","exploits":[{"source":"nuclei","id":"CVE-2021-20617","title":"Acmailer - Improper Access Control to OS Command Injection","type":"detection template","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-20617.yaml"}],"products":[{"vendor":"acmailer","product":"acmailer"},{"vendor":"acmailer","product":"acmailer_db"},{"vendor":"seeds co.,ltd.","product":"acmailer and acmailer db"}],"references":[{"url":"https://www.acmailer.jp/info/de.cgi?id=101","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://jvn.jp/en/jp/JVN35906450/index.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-20617"},{"url":"https://github.com/advisories/GHSA-6456-hr4p-p4pq"}],"sources":{"cve":[{"id":"CVE-2021-20617","description":"Improper access control vulnerability in acmailer ver. 4.0.1 and earlier, and acmailer DB ver. 1.1.3 and earlier allows remote attackers to execute an arbitrary OS command, or gain an administrative privilege which may result in obtaining the sensitive information on the server via unspecified vectors.","status":"published","published":"2021-01-14T08:20:16Z","modified":"2024-08-03T17:45:44.798Z","updated_at":"2026-11-02T14:32:55.564736Z"}],"euvd":[{"id":"EUVD-2021-8035","description":"Improper access control vulnerability in acmailer ver. 4.0.1 and earlier, and acmailer DB ver. 1.1.3 and earlier allows remote attackers to execute an arbitrary OS command, or gain an administrative privilege which may result in obtaining the sensitive information on the server via unspecified vectors.","status":"published","published":"2021-01-14T08:20:16Z","modified":"2024-08-03T17:45:44Z","updated_at":"2026-11-03T03:25:08.888273Z"}],"ghsa":[{"id":"GHSA-6456-hr4p-p4pq","title":"Improper access control vulnerability in acmailer ver. 4.0.1 and earlier, and acmailer DB ver. 1...","description":"Improper access control vulnerability in acmailer ver. 4.0.1 and earlier, and acmailer DB ver. 1.1.3 and earlier allows remote attackers to execute an arbitrary OS command, or gain an administrative privilege which may result in obtaining the sensitive information on the server via unspecified vectors.","status":"published","published":"2022-05-24T17:39:21Z","modified":"2023-01-27T05:02:40Z","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-269"],"updated_at":"2026-11-02T14:42:05.364036Z"}],"nvd":[{"id":"CVE-2021-20617","description":"Improper access control vulnerability in acmailer ver. 4.0.1 and earlier, and acmailer DB ver. 1.1.3 and earlier allows remote attackers to execute an arbitrary OS command, or gain an administrative privilege which may result in obtaining the sensitive information on the server via unspecified vectors.","status":"published","published":"2021-01-14T09:15:13.367Z","modified":"2026-06-17T03:34:07.817Z","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","assessor":"primary"},{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:06:49.284888Z"}]}}