PT-2026-44968 · Fourth Frontier · Frontier X Android Application+2

Published 2026-05-29 · Updated 2026-05-29 · CVE-2026-5768

Mitre

CVSS v3.1

8.8

High

Base vector

AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Fix

Missing Authentication

Weakness Enumeration

CWE-306

Related Identifiers

CVE-2026-5768

Affected Products

Frontier X Android Application

Frontier X Ios Application

Frontier X2

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-5768 · Security Note
• https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsma-26-148-01.json · Note
• https://cisa.gov/news-events/ics-medical-advisories/icsma-26-148-01 · Note
• https://fourthfrontier.com/pages/contact-us · Note