CVE-2025-54464: ZKTeco Co WL20 Biometric Attendance System

High severity, CVSS 7.0. EPSS: 0.1% chance of exploitation in the next 30 days.

This vulnerability exists in ZKTeco WL20 due to storage of admin and user credentials without encryption in the device firmware. An attacker with physical access could exploit this vulnerability by extracting the firmware and reverse engineer the binary data to access the unencrypted credentials stored in the firmware of targeted device.

Affected products

• ZKTeco Co WL20 Biometric Attendance System: up to and including ZLM31-FXO1-3.1.8

Published 2025-08-13. Last modified 2026-06-17.