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CVE-2021-34236

Estado: ModificadaCrítica (9.8)—

Buffer Overflow in Netgear R8000 Router with firmware v1.0.4.56 allows remote attackers to execute arbitrary code or cause a denial-of-service by sending a crafted POST to '/bd_genie_create_account.cgi' with a sufficiently long parameter 'register_country'.

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)

Netgear — R8000 Firmware

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2021-34236",
  "cveTags": [],
  "metrics": {
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 9.8,
          "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",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
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        "impactScore": 5.9,
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  "affected": [
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  ],
  "published": "2022-09-08T00:15:09.827",
  "references": [
    {
      "url": "https://github.com/Davidteeri/Bug-Report/blob/main/netgear-8000.md",
      "tags": [
        "Broken Link"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://github.com/advisories/GHSA-vfq9-7wg3-4mjx",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "nvd@nist.gov"
    },
    {
      "url": "https://github.com/Davidteeri/Bug-Report/blob/main/netgear-8000.md",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-120"
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      "value": "Buffer Overflow in Netgear R8000 Router with firmware v1.0.4.56 allows remote attackers to execute arbitrary code or cause a denial-of-service by sending a crafted POST to '/bd_genie_create_account.cgi' with a sufficiently long parameter 'register_country'."
    },
    {
      "lang": "es",
      "value": "Un Desbordamiento de Búfer en el Enrutador Netgear R8000 con versiones de firmware v1.0.4.56, permite a atacantes remotos ejecutar código arbitrario o causar una denegación de servicio mediante el envío de un POST manipulado a \"/bd_genie_create_account.cgi\" con un parámetro suficientemente largo \"register_country\""
    }
  ],
  "lastModified": "2026-06-17T03:55:34.257",
  "configurations": [
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  "sourceIdentifier": "cve@mitre.org"
}