Vulnerability Description
The Frontier X2 device allows unauthenticated BLE read/write access to critical GATT characteristics without enforcing pairing authentication or authorization. This allows attackers within BLE range to perform unauthorized control of device functions, including starting/stopping activities, triggering vibrations, causing denial-of-service conditions, and fuzzing characteristic values to induce unexpected behavior. Additionally, the Frontier X mobile application lacks proper BLE device authentication, allowing attackers to impersonate a legitimate Frontier X2 device and connect to the application. By cloning BLE advertisements and exposing expected GATT characteristics, attackers can manipulate activity states and inject fabricated health telemetry such as breathing rate, heart rate, strain, and other health-related data into the mobile application.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://fourthfrontier.com/pages/contact-us
- https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsma-26-1
- https://www.cisa.gov/news-events/ics-medical-advisories/icsma-26-148-01
FAQ
What is CVE-2026-5768?
CVE-2026-5768 is a vulnerability with a CVSS score of 8.8 (HIGH). The Frontier X2 device allows unauthenticated BLE read/write access to critical GATT characteristics without enforcing pairing authentication or authorization. This allows attackers within BLE range t...
How severe is CVE-2026-5768?
CVE-2026-5768 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-5768?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.