{"id":"CVE-2021-45036","aliases":["EUVD-2021-31833","GHSA-c83p-m9mw-q96q"],"status":"published","title":"Velneo vClient improper authentication","description":"Velneo vClient on its 28.1.3 version, could allow an attacker with knowledge of the victims's username and hashed password to spoof the victim's id against the server.","severity":{"version":"3.1","score":8.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00778,"percentile":0.56299,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-287","CWE-290","CWE-836"],"published":"2022-11-28T15:29:02Z","modified":"2026-06-17T04:13:04Z","products":[{"vendor":"velneo","product":"vclient"},{"vendor":"velneo","product":"velneo vclient"}],"references":[{"url":"https://www.incibe.es/en/incibe-cert/notices/aviso/velneo-vclient-improper-authentication-0","tags":["x_transferred"]},{"url":"https://www.velneo.com/blog/disponible-la-nueva-version-velneo-32","tags":["x_transferred","Release Notes","Vendor Advisory"]},{"url":"https://doc.velneo.com/v/32/velneo/notas-de-la-version#mejoras-de-seguridad-en-validacion-de-usuario-y-contrasena","tags":["x_transferred","Release Notes","Vendor Advisory"]},{"url":"https://velneo.es/mivelneo/listado-de-cambios-velneo-32/","tags":["x_transferred","Release Notes","Vendor Advisory"]},{"url":"https://doc.velneo.com/v/32/velneo/notas-de-la-version#a-partir-de-esta-version-todos-los-servidores-arrancaran-con-protocolo-vatps","tags":["x_transferred","Vendor Advisory"]},{"url":"https://doc.velneo.com/v/32/velneo-vserver/funcionalidades/protocolo-vatps","tags":["x_transferred","Vendor Advisory"]},{"url":"https://doc.velneo.com/v/32/velneo/funcionalidades-comunes/conexion-con-velneo-vserver","tags":["x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-45036"},{"url":"https://www.incibe-cert.es/en/early-warning/security-advisories/velneo-vclient-improper-authentication-0"},{"url":"https://velneo.es/mivelneo/listado-de-cambios-velneo-32"},{"url":"https://github.com/advisories/GHSA-c83p-m9mw-q96q"}],"sources":{"cve":[{"id":"CVE-2021-45036","title":"Velneo vClient improper authentication","description":"Velneo vClient on its 28.1.3 version, could allow an attacker with knowledge of the victims's username and hashed password to spoof the victim's id against the server.","status":"published","published":"2022-11-28T15:29:02.063Z","modified":"2025-04-25T14:59:40.409Z","cvss":[{"version":"3.1","score":8.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-290"],"updated_at":"2026-11-02T14:33:02.580561Z"}],"euvd":[{"id":"EUVD-2021-31833","description":"Velneo vClient on its 28.1.3 version, could allow an attacker with knowledge of the victims's username and hashed password to spoof the victim's id against the server.","status":"published","published":"2022-11-28T15:29:02Z","modified":"2025-04-25T14:59:40Z","cvss":[{"version":"3.1","score":8.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T20:52:03.523577Z"}],"ghsa":[{"id":"GHSA-c83p-m9mw-q96q","title":"Velneo vClient on its 28.1.3 version, could allow an attacker with knowledge of the victims's...","description":"Velneo vClient on its 28.1.3 version, could allow an attacker with knowledge of the victims's username and hashed password to spoof the victim's id against the server.","status":"published","published":"2022-11-28T18:30:17Z","modified":"2024-09-16T18:32:24Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-287","CWE-290","CWE-836"],"updated_at":"2026-11-02T14:58:17.022968Z"}],"nvd":[{"id":"CVE-2021-45036","description":"Velneo vClient on its 28.1.3 version, could allow an attacker with knowledge of the victims's username and hashed password to spoof the victim's id against the server.","status":"published","published":"2022-11-28T16:15:09.09Z","modified":"2026-06-17T04:13:04.687Z","cvss":[{"version":"3.1","score":8.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N","level":"high","assessor":"secondary"},{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"primary"}],"cwes":["CWE-290","CWE-287"],"updated_at":"2026-11-02T14:07:06.906968Z"}]}}