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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).

PUBLISHED Reserved 2025-09-09 | Published 2026-01-26 | Updated 2026-01-26 | Assigner SEC-VLab




MEDIUM: 5.1CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Problem types

CWE-1295: Debug Messages Revealing Unnecessary Information

Product status

Default status
unaffected

affected

Credits

Clemens Stockenreitner, SEC Consult Vulnerability Lab finder

Werner Schober, SEC Consult Vulnerability Lab finder

References

r.sec-consult.com/dormakaba technical-description

r.sec-consult.com/dkaccess third-party-advisory

www.dormakabagroup.com/en/security-advisories vendor-advisory

cve.org (CVE-2025-59109)

nvd.nist.gov (CVE-2025-59109)

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