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CVE-2021-20731

Estado: ModificadaAlta (8.8)—

WSR-1166DHP3 firmware Ver.1.16 and prior and WSR-1166DHP4 firmware Ver.1.02 and prior allow an attacker to execute arbitrary OS commands with root privileges via unspecified vectors.

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)

Buffalo — Wsr-1166dhp3 FirmwareBuffalo — Wsr-1166dhp4 Firmware

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2021-20731",
  "cveTags": [],
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
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          "baseScore": 8.3,
          "accessVector": "ADJACENT_NETWORK",
          "vectorString": "AV:A/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,
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        "exploitabilityScore": 6.5,
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        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
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    "cvssMetricV31": [
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          "attackVector": "ADJACENT_NETWORK",
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          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
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          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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        "impactScore": 5.9,
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  "affected": [
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      "affectedData": [
        {
          "vendor": "BUFFALO INC.",
          "product": "WSR-1166DHP3 and WSR-1166DHP4",
          "versions": [
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              "status": "affected",
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  "published": "2021-06-09T02:15:06.787",
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      "tags": [
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      "url": "https://www.buffalo.jp/news/detail/20210531-01.html",
      "tags": [
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      "source": "vultures@jpcert.or.jp"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-78"
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  "descriptions": [
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      "lang": "en",
      "value": "WSR-1166DHP3 firmware Ver.1.16 and prior and WSR-1166DHP4 firmware Ver.1.02 and prior allow an attacker to execute arbitrary OS commands with root privileges via unspecified vectors."
    },
    {
      "lang": "es",
      "value": "En versiones de firmware WSR-1166DHP3 Ver.1.16 y anteriores y versiones de firmware WSR-1166DHP4 Ver.1.02 y anteriores, permiten a un atacante ejecutar comandos de SO arbitrarios con privilegios de root por medio de vectores no especificados"
    }
  ],
  "lastModified": "2026-06-17T03:34:20.153",
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