CVE-2025-4053: Be-Tech Mifare Classic Cards

Medium severity, CVSS 6.8. EPSS: 0.1% chance of exploitation in the next 30 days.

The data stored in Be-Tech Mifare Classic card is stored in cleartext. An attacker having access to a Be-Tech hotel guest Mifare Classic card can create a master key card that unlocks all the locks in the building. This issue affects all Be-Tech Mifare Classic card systems. To fix the vulnerability, it is necessary to replace the software, encoder, cards, and PCBs in the locks.

Affected products

• Be-Tech Mifare Classic Cards: any version

Published 2025-05-26. Last modified 2026-06-17.