Fourth Frontier Frontier X Mobile Application, Frontier X2

Key Points:

• Main threat/vulnerability/incident: A critical vulnerability (CVE-2026-5768) in the Fourth Frontier Frontier X Mobile Application and Frontier X2 device allows unauthenticated Bluetooth Low Energy (BLE) access, enabling attackers to manipulate device functions and health telemetry.
• Impact assessment and affected systems: The vulnerability affects versions of the Frontier X Android application (<v15.0.0), iOS application (<v25.0.0), and all versions of the Frontier X2 device, with a CVSS score of 8.8 indicating high severity. Exploitation could lead to unauthorized control of devices, potentially resulting in patient harm.
• Recommended actions or mitigations: CISA recommends minimizing network exposure for control system devices, using firewalls, and implementing secure remote access methods like VPNs. Organizations should conduct impact analyses before deploying defensive measures.

Technical Details: CVE-2026-5768 allows attackers within BLE range to read/write arbitrary handle values without authentication, leading to unauthorized control over device functions and manipulation of health data.

MITRE ATT&CK Techniques: None mentioned

IOCs Mentioned: None mentioned