CVE-2026-5768: Missing Authentication for Critical Function

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,...

Fourth Frontier Frontier X Mobile Application, Frontier X2

ADVISORY SUMMARY Successful exploitation of this vulnerability could allow an attacker to read and write arbitrary handle values and change clinical readings, which could result in taking control of the device and lead to patient harm. 2. RECOMMENDED PRACTICES CISA recommends users take...