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CVE-2021-27708

Estado: ModificadaCrítica (9.8)—

Command Injection in TOTOLINK X5000R router with firmware v9.1.0u.6118_B20201102, and TOTOLINK A720R router with firmware v4.1.5cu.470_B20200911 allows remote attackers to execute arbitrary OS commands by sending a modified HTTP request. This occurs because the function executes glibc's system function with untrusted input. In the function, "command" parameter is directly passed to the attacker, allowing them to control the "command" field to attack the OS.

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 (2)

Totolink — A720r FirmwareTotolink — X5000r Firmware

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2021-27708",
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          "baseScore": 10,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/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,
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        "obtainAllPrivilege": false,
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          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
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          "confidentialityImpact": "HIGH"
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  "affected": [
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      "affectedData": [
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  "published": "2021-04-14T16:15:14.127",
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  "vulnStatus": "Modified",
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      "description": [
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          "value": "CWE-78"
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      "lang": "en",
      "value": "Command Injection in TOTOLINK X5000R router with firmware v9.1.0u.6118_B20201102, and TOTOLINK A720R router with firmware v4.1.5cu.470_B20200911 allows remote attackers to execute arbitrary OS commands by sending a modified HTTP request. This occurs because the function executes glibc's system function with untrusted input. In the function, \"command\" parameter is directly passed to the attacker, allowing them to control the \"command\" field to attack the OS."
    },
    {
      "lang": "es",
      "value": "Una inyección de comandos en el enrutador TOTOLINK X5000R con firmware v9.1.0u.6118_B20201102, permite a atacantes remotos ejecutar comandos arbitrarios del Sistema Operativo mediante el envío de una petición HTTP modificada. Esto ocurre porque la función ejecuta la función del sistema de glibc con una entrada que no es confiable. En la función, el parámetro \"command\" se pasa directamente al atacante, lo que le permite controlar el campo \"command\" para atacar el sistema operativo"
    }
  ],
  "lastModified": "2026-06-17T03:45:22.290",
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