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CVE-2021-33267

Estado: ModificadaCrítica (9.8)—

D-Link DIR-809 devices with firmware through DIR-809Ax_FW1.12WWB03_20190410 were discovered to contain a stack buffer overflow vulnerability in the function FUN_80034d60 in /formStaticDHCP. This vulnerability is triggered via a crafted POST request.

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)

Dlink — Dir-809 Firmware

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-33267",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
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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"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
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          "attackVector": "NETWORK",
          "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",
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          "confidentialityImpact": "HIGH"
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  "affected": [
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      "affectedData": [
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          "versions": [
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  "published": "2021-12-01T22:15:07.690",
  "references": [
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      "url": "https://github.com/Lnkvct/IoT-poc/tree/master/D-Link-DIR809/vuln02",
      "tags": [
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        "Third Party Advisory"
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      "url": "https://www.dlink.com/en/security-bulletin/",
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      "url": "https://github.com/Lnkvct/IoT-poc/tree/master/D-Link-DIR809/vuln02",
      "tags": [
        "Exploit",
        "Third Party Advisory"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "D-Link DIR-809 devices with firmware through DIR-809Ax_FW1.12WWB03_20190410 were discovered to contain a stack buffer overflow vulnerability in the function FUN_80034d60 in /formStaticDHCP. This vulnerability is triggered via a crafted POST request."
    },
    {
      "lang": "es",
      "value": "Se ha detectado que los dispositivos D-Link DIR-809 con versión de firmware hasta DIR-809Ax_FW1.12WB03_20190410, contienen una vulnerabilidad de desbordamiento del búfer de la pila en la función FUN_80034d60 en /formStaticDHCP. Esta vulnerabilidad es desencadenada por medio de una petición POST diseñada"
    }
  ],
  "lastModified": "2026-06-17T03:54:24.133",
  "configurations": [
    {
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