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CVE-2018-9149

Estado: ModificadaMedia (6.8)—

The Zyxel Multy X (AC3000 Tri-Band WiFi System) device doesn't use a suitable mechanism to protect the UART. After an attacker dismantles the device and uses a USB-to-UART cable to connect the device, he can use the 1234 password for the root account to login to the system. Furthermore, an attacker can start the device's TELNET service as a backdoor.

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)

Zyxel — Ac3000 Firmware

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2018-9149",
  "cveTags": [],
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        "source": "nvd@nist.gov",
        "cvssData": {
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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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          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
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          "confidentialityImpact": "HIGH"
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  "affected": [
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      "affectedData": [
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  "published": "2018-04-01T18:29:00.287",
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          "value": "CWE-798"
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      "value": "The Zyxel Multy X (AC3000 Tri-Band WiFi System) device doesn't use a suitable mechanism to protect the UART. After an attacker dismantles the device and uses a USB-to-UART cable to connect the device, he can use the 1234 password for the root account to login to the system. Furthermore, an attacker can start the device's TELNET service as a backdoor."
    },
    {
      "lang": "es",
      "value": "El dispositivo Zyxel Multy X (AC3000 Tri-Band WiFi System) no utiliza un mecanismo adecuado para proteger el UART. Después de que un atacante inutilice el dispositivo y emplee un cable USB-UART para conectarse al dispositivo, puede utilizar la contraseña 1234 para iniciar sesión en el sistema con la cuenta root. Además, un atacante puede iniciar el servicio TELNET del dispositivo como una puerta trasera."
    }
  ],
  "lastModified": "2026-06-17T02:06:09.787",
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