CVE-2025-4994

Summary

The SafeLine SL6 and SL6+ devices integrated into elevator emergency intercom systems are vulnerable to an authentication bypass. This vulnerability allows attackers to bypass authentication requirements and access the device's configuration service via the Bluetooth Low Energy (BLE) interface. Consequently, an attacker within wireless range can gain unauthorized administrative access to the device configuration.

Affected Software

Weaknesses

• CWE-305: CWE-305 Authentication bypass by primary weakness

Workarounds

The "Auto Enable BLE" setting should be disabled. This ensures that the BLE interface is deactivated after the initial time window, preventing wireless access to the configuration interface.

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: total

References

• https://www.schutzwerk.com/en/blog/schutzwerk-sa-2025-001/

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