FKIE_CVE-2026-5768

Vulnerability from fkie_nvd - Published: 2026-05-29 18:17 - Updated: 2026-07-22 06:10
Severity
8.8 (High) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
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.
References
ics-cert@hq.dhs.govhttps://fourthfrontier.com/pages/contact-us
ics-cert@hq.dhs.govhttps://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsma-26-148-01.json
ics-cert@hq.dhs.govhttps://www.cisa.gov/news-events/ics-medical-advisories/icsma-26-148-01
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Frontier X Android application",
          "vendor": "Fourth Frontier",
          "versions": [
            {
              "lessThan": "15.0.0",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Frontier X IOS application",
          "vendor": "Fourth Frontier",
          "versions": [
            {
              "lessThan": "25.0.0",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Frontier X2",
          "vendor": "Fourth Frontier",
          "versions": [
            {
              "status": "affected",
              "version": "All versions"
            }
          ]
        }
      ],
      "source": "ics-cert@hq.dhs.gov"
    }
  ],
  "cveTags": [],
  "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."
    },
    {
      "lang": "es",
      "value": "El dispositivo Frontier X2 permite acceso de lectura/escritura BLE no autenticado a caracter\u00edsticas GATT cr\u00edticas sin aplicar autenticaci\u00f3n o autorizaci\u00f3n de emparejamiento. Esto permite a los atacantes dentro del alcance BLE realizar un control no autorizado de las funciones del dispositivo, incluyendo iniciar/detener actividades, activar vibraciones, causar condiciones de denegaci\u00f3n de servicio y \u0027fuzzing\u0027 de valores de caracter\u00edsticas para inducir un comportamiento inesperado. Adem\u00e1s, la aplicaci\u00f3n m\u00f3vil Frontier X carece de una autenticaci\u00f3n adecuada del dispositivo BLE, permitiendo a los atacantes suplantar un dispositivo Frontier X2 leg\u00edtimo y conectarse a la aplicaci\u00f3n. Al clonar anuncios BLE y exponer caracter\u00edsticas GATT esperadas, los atacantes pueden manipular estados de actividad e inyectar telemetr\u00eda de salud fabricada como frecuencia respiratoria, frecuencia card\u00edaca, esfuerzo y otros datos relacionados con la salud en la aplicaci\u00f3n m\u00f3vil."
    }
  ],
  "id": "CVE-2026-5768",
  "lastModified": "2026-07-22T06:10:00.170",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "ADJACENT_NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9,
        "source": "ics-cert@hq.dhs.gov",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-5768",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-05-29T19:25:07.692084Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-05-29T18:17:12.997",
  "references": [
    {
      "source": "ics-cert@hq.dhs.gov",
      "url": "https://fourthfrontier.com/pages/contact-us"
    },
    {
      "source": "ics-cert@hq.dhs.gov",
      "url": "https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsma-26-148-01.json"
    },
    {
      "source": "ics-cert@hq.dhs.gov",
      "url": "https://www.cisa.gov/news-events/ics-medical-advisories/icsma-26-148-01"
    }
  ],
  "sourceIdentifier": "ics-cert@hq.dhs.gov",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-306"
        }
      ],
      "source": "ics-cert@hq.dhs.gov",
      "type": "Secondary"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.