CVE-2025-59109 UART Leaking Sensitive Data in dormakaba registration unit 9002
An attacker with physical access can connect to the exposed UART interface to exfiltrate sensitive PIN data entered on the device.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-59109?
CVE-2025-59109 is a medium-severity vulnerability in dormakaba registration unit 9002, published on 26 Jan 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
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).
Weakness: CWE-1295
Which versions are affected by CVE-2025-59109?
How do I fix CVE-2025-59109?
No fix has been published for CVE-2025-59109 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-59109 being exploited?
There is no known exploitation of CVE-2025-59109 in the wild and no public exploit code.
Sources
Also known as GHSA-4m2m-3rvh-cp5p.