{"id":"CVE-2021-40333","aliases":["EUVD-2021-27512","GHSA-94q6-cm2f-p4pc"],"status":"published","title":"Weak default credential associated with TCP port 26","description":"Weak Password Requirements vulnerability in Hitachi Energy FOX61x, XCM20 allows an attacker to gain unauthorized access to the Data Communication Network (DCN) routing configuration. This issue affects: Hitachi Energy FOX61x versions prior to R15A. Hitachi Energy XCM20 versions prior to R15A.","severity":{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00655,"percentile":0.51691,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-521"],"published":"2021-12-02T18:29:36Z","modified":"2026-06-17T04:06:44Z","products":[{"vendor":"hitachi energy","product":"fox61x"},{"vendor":"hitachi energy","product":"xcm20"},{"vendor":"hitachienergy","product":"fox615_firmware"},{"vendor":"hitachienergy","product":"xcm20_firmware"}],"references":[{"url":"https://search.abb.com/library/Download.aspx?DocumentID=8DBD000062\u0026LanguageCode=en\u0026DocumentPartId=\u0026Action=Launch","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://search.abb.com/library/Download.aspx?DocumentID=8DBD000069\u0026LanguageCode=en\u0026DocumentPartId=\u0026Action=Launch","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-40333"},{"url":"https://github.com/advisories/GHSA-94q6-cm2f-p4pc"}],"sources":{"cve":[{"id":"CVE-2021-40333","title":"Weak default credential associated with TCP port 26","description":"Weak Password Requirements vulnerability in Hitachi Energy FOX61x, XCM20 allows an attacker to gain unauthorized access to the Data Communication Network (DCN) routing configuration. This issue affects: Hitachi Energy FOX61x versions prior to R15A. Hitachi Energy XCM20 versions prior to R15A.","status":"published","published":"2021-12-02T18:29:36.828Z","modified":"2024-09-17T00:15:37.686Z","cvss":[{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-521"],"updated_at":"2026-11-02T14:33:01.852999Z"}],"euvd":[{"id":"EUVD-2021-27512","description":"Weak Password Requirements vulnerability in Hitachi Energy FOX61x, XCM20 allows an attacker to gain unauthorized access to the Data Communication Network (DCN) routing configuration. This issue affects: Hitachi Energy FOX61x versions prior to R15A. Hitachi Energy XCM20 versions prior to R15A.","status":"published","published":"2021-12-02T18:29:36Z","modified":"2024-09-17T00:15:37Z","cvss":[{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:H/A:H","level":"critical"}],"updated_at":"2026-11-03T00:29:01.072419Z"}],"ghsa":[{"id":"GHSA-94q6-cm2f-p4pc","title":"Weak Password Requirements vulnerability in Hitachi Energy FOX61x, XCM20 allows an attacker to...","description":"Weak Password Requirements vulnerability in Hitachi Energy FOX61x, XCM20 allows an attacker to gain unauthorized access to the Data Communication Network (DCN) routing configuration. This issue affects: Hitachi Energy FOX61x versions prior to R15A. Hitachi Energy XCM20 versions prior to R15A.","status":"published","published":"2021-12-03T00:00:27Z","modified":"2023-02-01T05:06:27Z","cwes":["CWE-521"],"updated_at":"2026-11-02T14:50:21.264393Z"}],"nvd":[{"id":"CVE-2021-40333","description":"Weak Password Requirements vulnerability in Hitachi Energy FOX61x, XCM20 allows an attacker to gain unauthorized access to the Data Communication Network (DCN) routing configuration. This issue affects: Hitachi Energy FOX61x versions prior to R15A. Hitachi Energy XCM20 versions prior to R15A.","status":"published","published":"2021-12-02T19:15:08.277Z","modified":"2026-06-17T04:06:44.54Z","cvss":[{"version":"3.1","score":9,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:H/A:H","level":"critical","assessor":"secondary"},{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5.5,"vector":"AV:N/AC:L/Au:S/C:P/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-521"],"updated_at":"2026-11-02T14:07:01.811115Z"}]}}