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CVE-2021-34150

Estado: ModificadaMedia (6.5)—

The Bluetooth Classic implementation on Bluetrum AB5301A devices with unknown firmware versions does not properly handle the reception of oversized DM1 LMP packets while no other BT connections are active, allowing attackers in radio range to prevent new BT connections (disabling the AB5301A inquiry and page scan procedures) via a crafted LMP packet. The user needs to manually perform a power cycle (restart) of the device to restore BT connectivity.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Bluetrum — Ab5301a Firmware

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-34150",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 3.3,
          "accessVector": "ADJACENT_NETWORK",
          "vectorString": "AV:A/AC:L/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
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        "obtainAllPrivilege": false,
        "exploitabilityScore": 6.5,
        "obtainUserPrivilege": false,
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          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
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        "impactScore": 3.6,
        "exploitabilityScore": 2.8
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  "affected": [
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      "affectedData": [
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          "vendor": "n/a",
          "product": "n/a",
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  "published": "2021-09-07T06:15:08.013",
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
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          "value": "NVD-CWE-noinfo"
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  "descriptions": [
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      "lang": "en",
      "value": "The Bluetooth Classic implementation on Bluetrum AB5301A devices with unknown firmware versions does not properly handle the reception of oversized DM1 LMP packets while no other BT connections are active, allowing attackers in radio range to prevent new BT connections (disabling the AB5301A inquiry and page scan procedures) via a crafted LMP packet. The user needs to manually perform a power cycle (restart) of the device to restore BT connectivity."
    },
    {
      "lang": "es",
      "value": "Una implementación de Bluetooth Classic en los dispositivos Bluetrum AB5301A con versiones de firmware desconocidas no maneja apropiadamente la recepción de paquetes LMP DM1 de gran tamaño mientras no presenta otras conexiones BT activas, permitiendo a atacantes en el rango de radio impedir nuevas conexiones BT (deshabilitando los procedimientos de consulta y exploración de páginas del AB5301A) por medio de un paquete LMP diseñado. El usuario necesita llevar a cabo manualmente un ciclo de alimentación (reinicio) del dispositivo para restaurar la conectividad BT"
    }
  ],
  "lastModified": "2026-06-17T03:55:31.197",
  "configurations": [
    {
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  "sourceIdentifier": "cve@mitre.org"
}