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CVE-2021-31505

Estado: ModificadaMedia (6.8)—

This vulnerability allows attackers with physical access to escalate privileges on affected installations of Arlo Q Plus 1.9.0.3_278. Authentication is not required to exploit this vulnerability. The specific flaw exists within the SSH service. The device can be booted into a special operation mode where hard-coded credentials are accepted for SSH authentication. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of root. Was ZDI-CAN-12890.

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)

Arlo — Q Plus Firmware

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2021-31505",
  "cveTags": [],
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        "source": "nvd@nist.gov",
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          "baseScore": 7.2,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
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        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
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  "published": "2021-06-29T15:15:18.993",
  "references": [
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
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          "value": "CWE-798"
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    {
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      "value": "This vulnerability allows attackers with physical access to escalate privileges on affected installations of Arlo Q Plus 1.9.0.3_278. Authentication is not required to exploit this vulnerability. The specific flaw exists within the SSH service. The device can be booted into a special operation mode where hard-coded credentials are accepted for SSH authentication. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of root. Was ZDI-CAN-12890."
    },
    {
      "lang": "es",
      "value": "Esta vulnerabilidad permite a atacantes con acceso físico escalar privilegios en las instalaciones afectadas de Arlo Q Plus versión 1.9.0.3_278. No es requerida una autenticación para explotar esta vulnerabilidad. El fallo específico se presenta en el servicio SSH. El dispositivo puede ser arrancado en un modo de funcionamiento especial en donde credenciales embebidas son aceptadas para la autenticación SSH. Un atacante puede aprovechar esta vulnerabilidad para escalar privilegios y ejecutar código arbitrario en el contexto de root. Fue ZDI-CAN-12890"
    }
  ],
  "lastModified": "2026-06-17T03:51:55.467",
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