CVE-2026-4648: Inadequate Encryption Strength

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...

Hardware Backdoor Discovered in RFID Cards Used in Hotels and Offices Worldwide

Cybersecurity researchers have uncovered a hardware backdoor within a particular model of MIFARE Classic contactless cards that could allow authentication with an unknown key and open hotel rooms and office doors. The attacks have been demonstrated against FM11RF08S, a new variant of MIFARE Class...