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Status published
High
CVE-2021-45036
Velneo vClient improper authentication
Vulnerability 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Jesús Ródenas Huerta, @Marmeus
References
- https://www.incibe.es/en/incibe-cert/notices/aviso/velneo-vclient-improper-authentication-0
- https://www.velneo.com/blog/disponible-la-nueva-version-velneo-32
- https://doc.velneo.com/v/32/velneo/notas-de-la-version#mejoras-de-seguridad-en-validacion-de-usuario-y-contrasena
- https://velneo.es/mivelneo/listado-de-cambios-velneo-32/
- https://doc.velneo.com/v/32/velneo/notas-de-la-version#a-partir-de-esta-version-todos-los-servidores-arrancaran-con-protocolo-vatps
- https://doc.velneo.com/v/32/velneo-vserver/funcionalidades/protocolo-vatps
- https://doc.velneo.com/v/32/velneo/funcionalidades-comunes/conexion-con-velneo-vserver
Affected Vendor
Velneo
View all reports →Affected Software
Velneo vClient
Vulnerable Versions:
28.1.3
Timeline
Official Publish:
November 28th, 2022
Last Modified:
April 25th, 2025
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N