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CVE-2018-19986

Estado: ModificadaCrítica (9.8)—

In the /HNAP1/SetRouterSettings message, the RemotePort parameter is vulnerable, and the vulnerability affects D-Link DIR-818LW Rev.A 2.05.B03 and DIR-822 B1 202KRb06 devices. In the SetRouterSettings.php source code, the RemotePort parameter is saved in the $path_inf_wan1."/web" internal configuration memory without any regex checking. And in the IPTWAN_build_command function of the iptwan.php source code, the data in $path_inf_wan1."/web" is used with the iptables command without any regex checking. A vulnerable /HNAP1/SetRouterSettings XML message could have shell metacharacters in the RemotePort element such as the `telnetd` string.

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)

D-link — Dir-818lw FirmwareD-link — Dir-822 Firmware

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2018-19986",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "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,
        "impactScore": 10,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
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        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
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          "version": "3.0",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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        "impactScore": 5.9,
        "exploitabilityScore": 3.9
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  "affected": [
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      "affectedData": [
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          "vendor": "n/a",
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          "versions": [
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              "status": "affected",
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  "published": "2019-05-13T14:29:01.143",
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  "vulnStatus": "Modified",
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      "description": [
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          "value": "CWE-78"
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  "descriptions": [
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      "lang": "en",
      "value": "In the /HNAP1/SetRouterSettings message, the RemotePort parameter is vulnerable, and the vulnerability affects D-Link DIR-818LW Rev.A 2.05.B03 and DIR-822 B1 202KRb06 devices. In the SetRouterSettings.php source code, the RemotePort parameter is saved in the $path_inf_wan1.\"/web\" internal configuration memory without any regex checking. And in the IPTWAN_build_command function of the iptwan.php source code, the data in $path_inf_wan1.\"/web\" is used with the iptables command without any regex checking. A vulnerable /HNAP1/SetRouterSettings XML message could have shell metacharacters in the RemotePort element such as the `telnetd` string."
    },
    {
      "lang": "es",
      "value": "En el mensaje /HNAP1/SetRouterSettings, el parámetro RemotePort es vulnerable y la vulnerabilidad afecta a los dispositivos D-Link DIR-818LW Rev.A 2.05.B03 y DIR-822 B1 202KRb06. En el código fuente del archivo SetRouterSettings.php, el parámetro RemotePort es guardado en la memoria de la configuración interna de  $path_inf_wan1.\"/web\" sin ninguna comprobación regex. Y en la función IPTWAN_build_command del código fuente iptwan.php, los datos en $ path_inf_wan1. \"/ Web\" se usa con el comando iptables sin ninguna comprobación regex. Un mensaje XML vulnerable/HNAP1/SetRouterSettings podría tener metacaracteres shell en el elemento RemotePort como la cadena \"telnetd\"."
    }
  ],
  "lastModified": "2026-06-17T01:50:14.420",
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