{"id":"CVE-2021-20998","aliases":["EUVD-2021-8407","GHSA-wvfh-fc5m-v972"],"status":"published","title":"WAGO: Managed Switches: Unauthorized creation of user accounts","description":"In multiple managed switches by WAGO in different versions without authorization and with specially crafted packets it is possible to create users.","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","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.01111,"percentile":0.6642,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-306"],"published":"2021-05-13T13:45:25Z","modified":"2026-06-17T03:34:37Z","products":[{"vendor":"wago","product":"0852-0303"},{"vendor":"wago","product":"0852-0303_firmware"},{"vendor":"wago","product":"0852-1305"},{"vendor":"wago","product":"0852-1305/000-001"},{"vendor":"wago","product":"0852-1305\\/000-001_firmware"},{"vendor":"wago","product":"0852-1305_firmware"},{"vendor":"wago","product":"0852-1505"},{"vendor":"wago","product":"0852-1505/000-001"},{"vendor":"wago","product":"0852-1505\\/000-001_firmware"},{"vendor":"wago","product":"0852-1505_firmware"}],"references":[{"url":"https://cert.vde.com/en-us/advisories/vde-2021-013","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-20998"},{"url":"https://github.com/advisories/GHSA-wvfh-fc5m-v972"}],"sources":{"cve":[{"id":"CVE-2021-20998","title":"WAGO: Managed Switches: Unauthorized creation of user accounts","description":"In multiple managed switches by WAGO in different versions without authorization and with specially crafted packets it is possible to create users.","status":"published","published":"2021-05-13T13:45:25.179Z","modified":"2024-09-17T00:51:42.12Z","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":"cna"}],"cwes":["CWE-306"],"updated_at":"2026-11-02T14:32:55.564736Z"}],"euvd":[{"id":"EUVD-2021-8407","description":"In multiple managed switches by WAGO in different versions without authorization and with specially crafted packets it is possible to create users.","status":"published","published":"2021-05-13T13:45:25Z","modified":"2024-09-17T00:51:42Z","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"}],"updated_at":"2026-11-03T00:28:54.932148Z"}],"ghsa":[{"id":"GHSA-wvfh-fc5m-v972","title":"In multiple managed switches by WAGO in different versions without authorization and with...","description":"In multiple managed switches by WAGO in different versions without authorization and with specially crafted packets it is possible to create users.","status":"published","published":"2022-05-24T19:02:22Z","modified":"2023-01-29T05:06:16Z","cwes":["CWE-306"],"updated_at":"2026-11-02T14:45:59.056416Z"}],"nvd":[{"id":"CVE-2021-20998","description":"In multiple managed switches by WAGO in different versions without authorization and with specially crafted packets it is possible to create users.","status":"published","published":"2021-05-13T14:15:18.113Z","modified":"2026-06-17T03:34:37.633Z","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":"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-306"],"updated_at":"2026-11-02T14:06:53.343329Z"}]}}