{"id":"CVE-2021-43931","aliases":["EUVD-2021-30793","GHSA-9p49-7vh4-82rx"],"status":"published","title":"Distributed Data Systems WebHM","description":"The authentication algorithm of the WebHMI portal is sound, but the implemented mechanism can be bypassed as the result of a separate weakness that is primary to the authentication error.","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":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.01481,"percentile":0.74282,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-287"],"published":"2021-12-06T17:40:45Z","modified":"2026-06-17T04:11:38Z","products":[{"vendor":"distributed data systems","product":"webhmi"},{"vendor":"webhmi","product":"webhmi_firmware"}],"references":[{"url":"https://us-cert.cisa.gov/ics/advisories/icsa-21-336-03","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-43931"},{"url":"https://github.com/advisories/GHSA-9p49-7vh4-82rx"}],"sources":{"cve":[{"id":"CVE-2021-43931","title":"Distributed Data Systems WebHM","description":"The authentication algorithm of the WebHMI portal is sound, but the implemented mechanism can be bypassed as the result of a separate weakness that is primary to the authentication error.","status":"published","published":"2021-12-06T17:40:45Z","modified":"2024-08-04T04:10:17.161Z","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":"cna"}],"updated_at":"2026-11-02T14:32:56.689433Z"}],"euvd":[{"id":"EUVD-2021-30793","description":"The authentication algorithm of the WebHMI portal is sound, but the implemented mechanism can be bypassed as the result of a separate weakness that is primary to the authentication error.","status":"published","published":"2021-12-06T17:40:45Z","modified":"2024-08-04T04:10:17Z","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"}],"updated_at":"2026-11-03T03:24:12.599691Z"}],"ghsa":[{"id":"GHSA-9p49-7vh4-82rx","title":"The authentication algorithm of the WebHMI portal is sound, but the implemented mechanism can be...","description":"The authentication algorithm of the WebHMI portal is sound, but the implemented mechanism can be bypassed as the result of a separate weakness that is primary to the authentication error.","status":"published","published":"2021-12-07T00:00:28Z","modified":"2023-02-01T05:06:56Z","cwes":["CWE-287"],"updated_at":"2026-11-02T14:50:26.86128Z"}],"nvd":[{"id":"CVE-2021-43931","description":"The authentication algorithm of the WebHMI portal is sound, but the implemented mechanism can be bypassed as the result of a separate weakness that is primary to the authentication error.","status":"published","published":"2021-12-06T18:15:08.303Z","modified":"2026-06-17T04:11:38.927Z","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":"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":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:07:01.811115Z"}]}}