Description
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
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| ZKTeco Co | WL20 Biometric Attendance System | <=ZLM31-FXO1-3.1.8 | — |
References
- https://www.cert-in.org.in/s2cMainServlet?pageid=PUBVLNOTES01&VLCODE=CIVN-2025-0172 third-party-advisory
- https://www.zkteco.com/en/Security_Bulletinsibs/20 vendor-advisory