CVE-2026-4648
Gravedad CVSS v4.0:
MEDIA
Tipo:
CWE-326
Fortaleza de cifrado inadecuada
Fecha de publicación:
28/07/2026
Última modificación:
28/07/2026
Descripción
*** Pendiente de traducción *** Use of an insecure cryptographic algorithm in the cashless payment system using NFC wristbands from CasfID Servicios Tecnológicos S.L.U. (version used at Resurrection Fest 2025), which employs cards based on MIFARE Classic technology (FM11RF08S). The cryptographic weakness of the authentication algorithm allows an attacker to retrieve access keys using techniques known as Backdoored Nested Attack, read the wristband’s entire contents, and clone its credentials onto a compatible rewritable card. Exploitation of this vulnerability could enable the impersonation of other attendees, the fraudulent use of the balance associated with their wristbands, and financial losses for both the affected users and the event organizers.
Impacto
Puntuación base 4.0
6.80
Gravedad 4.0
MEDIA