CVE-2025-59109: UART Leaking Sensitive Data in dormakaba registration unit 9002
The dormakaba registration units 9002 (PIN Pad Units) have an exposed UART header on the backside. The PIN pad is sending every button press to the UART interface. An attacker can use the interface to exfiltrate PINs. As the devices are explicitly built as Plug-and-Play to be easily replaced, an attacker is easily able to remove the device, install a hardware implant which connects to the UART and exfiltrates the data exposed via UART to another system (e.g. via WiFi).
Affected Software
Remediation
Information
Event History
Frequently Asked Questions
What is the severity of CVE-2025-59109?
CVE-2025-59109 is considered a high-severity vulnerability due to the potential for sensitive data exfiltration.
How do I fix CVE-2025-59109?
To mitigate CVE-2025-59109, it is recommended to secure the UART header to prevent unauthorized access.
What data is exposed by CVE-2025-59109?
CVE-2025-59109 exposes sensitive data including PIN entries from users on the dormakaba registration unit 9002.
Who is affected by CVE-2025-59109?
Users of the dormakaba registration unit 9002 are affected by CVE-2025-59109 due to the design flaw in the UART interface.
Can CVE-2025-59109 be exploited remotely?
CVE-2025-59109 requires physical access to the device's UART header to exploit and exfiltrate data.