CVE-2025-3885
Harman Becker MGU21 Bluetooth Improper Input Validation Denial-of-Service Vulnerability. This vulnerability allows network-adjacent attackers to create a denial-of-service condition on affected installations of Harman Becker MGU21 devices. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the Bluetooth stack of the BCM89359 chipset. The issue results from the lack of proper validation of Bluetooth frames. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-23942.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 6.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.28%
- Percentil entre todas las CVEs puntuadas: 18
- Fecha de la puntuación: 6/10/2026
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)
CWE
- CWE-20
- NVD-CWE-noinfo
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2025-3885",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2025-3885",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2025-05-22T18:29:02.500327Z"
}
}
],
"cvssMetricV30": [
{
"type": "Secondary",
"source": "zdi-disclosures@trendmicro.com",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.0",
"baseScore": 5.3,
"attackVector": "ADJACENT_NETWORK",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "HIGH",
"availabilityImpact": "HIGH",
"privilegesRequired": "NONE",
"confidentialityImpact": "NONE"
},
"impactScore": 3.6,
"exploitabilityScore": 1.6
}
],
"cvssMetricV31": [
{
"type": "Primary",
"source": "nvd@nist.gov",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.1",
"baseScore": 6.5,
"attackVector": "ADJACENT_NETWORK",
"baseSeverity": "MEDIUM",
"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"
},
"impactScore": 3.6,
"exploitabilityScore": 2.8
}
]
},
"affected": [
{
"source": "zdi-disclosures@trendmicro.com",
"affectedData": [
{
"vendor": "Harman Becker",
"product": "MGU21",
"versions": [
{
"status": "affected",
"version": "MGU21_22-07 firmware with BCM89359 wireless chipset; LMP Version: 5.0 (0x9); LMP Subversion: 0x420d"
}
],
"defaultStatus": "unknown"
}
]
}
],
"published": "2025-05-22T01:15:54.323",
"references": [
{
"url": "https://www.zerodayinitiative.com/advisories/ZDI-25-251/",
"tags": [
"Third Party Advisory"
],
"source": "zdi-disclosures@trendmicro.com"
}
],
"vulnStatus": "Analyzed",
"weaknesses": [
{
"type": "Secondary",
"source": "zdi-disclosures@trendmicro.com",
"description": [
{
"lang": "en",
"value": "CWE-20"
}
]
},
{
"type": "Primary",
"source": "nvd@nist.gov",
"description": [
{
"lang": "en",
"value": "NVD-CWE-noinfo"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Harman Becker MGU21 Bluetooth Improper Input Validation Denial-of-Service Vulnerability. This vulnerability allows network-adjacent attackers to create a denial-of-service condition on affected installations of Harman Becker MGU21 devices. Authentication is not required to exploit this vulnerability.\n\nThe specific flaw exists within the Bluetooth stack of the BCM89359 chipset. The issue results from the lack of proper validation of Bluetooth frames. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-23942."
},
{
"lang": "es",
"value": "Vulnerabilidad de denegación de servicio por validación incorrecta de entrada en Harman Becker MGU21 Bluetooth. Esta vulnerabilidad permite a atacantes adyacentes a la red crear una condición de denegación de servicio en las instalaciones afectadas de dispositivos Harman Becker MGU21. No se requiere autenticación para explotar esta vulnerabilidad. La falla específica existe en la pila Bluetooth del chipset BCM89359. El problema se debe a la falta de una validación adecuada de las tramas Bluetooth. Un atacante puede aprovechar esta vulnerabilidad para crear una condición de denegación de servicio en el sistema. Anteriormente, se denominaba ZDI-CAN-23942."
}
],
"lastModified": "2026-06-17T09:20:51.703",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:o:samsung:harman_mgu21_firmware:mgu21_22-07:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "F887348A-8C48-44B9-94A8-DE1204E69F94"
}
],
"operator": "OR"
},
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:h:samsung:harman_mgu21:-:*:*:*:*:*:*:*",
"vulnerable": false,
"matchCriteriaId": "116271C2-9D1E-4898-BF8A-7D8D17505AB8"
}
],
"operator": "OR"
}
],
"operator": "AND"
}
],
"sourceIdentifier": "zdi-disclosures@trendmicro.com"
}