{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-5768", "assignerOrgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6", "state": "PUBLISHED", "assignerShortName": "icscert", "dateReserved": "2026-04-07T20:28:13.672Z", "datePublished": "2026-05-29T16:58:02.035Z", "dateUpdated": "2026-05-29T19:31:52.111Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6", "shortName": "icscert", "dateUpdated": "2026-05-29T16:58:02.035Z"}, "title": "Fourth Frontier Frontier X Mobile Application, Frontier X2 Missing Authentication for Critical Function", "datePublic": "2026-05-28T16:46:00.000Z", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-306", "description": "CWE-306", "type": "CWE"}]}], "affected": [{"vendor": "Fourth Frontier", "product": "Frontier X Android application", "versions": [{"status": "affected", "version": "0", "lessThan": "15.0.0", "versionType": "custom"}], "defaultStatus": "unaffected"}, {"vendor": "Fourth Frontier", "product": "Frontier X IOS application", "versions": [{"status": "affected", "version": "0", "lessThan": "25.0.0", "versionType": "custom"}], "defaultStatus": "unaffected"}, {"vendor": "Fourth Frontier", "product": "Frontier X2", "versions": [{"status": "affected", "version": "All versions"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "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.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<span>The Frontier X2 device allows unauthenticated BLE read/write access to critical GATT characteristics without enforcing pairing authentication or authorization. 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Users are encouraged to reach out to Fourth Frontier directly for assistance:\u00a0\n https://fourthfrontier.com/pages/contact-us \n\n\n\nFrontier X/X2 devices can connect to only one app at a time; users should first connect the Frontier X/X2 device using the Frontier X app and then start the activity.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<p>Fourth Frontier is aware of the vulnerability and is working on a fix. 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