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CVE-2020-12662

Estado: ModificadaAlta (7.5)—

Unbound before 1.10.1 has Insufficient Control of Network Message Volume, aka an "NXNSAttack" issue. This is triggered by random subdomains in the NSDNAME in NS records.

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 (5)

Canonical — Ubuntu LinuxDebian — Debian LinuxFedoraproject — FedoraNlnetlabs — UnboundOpensuse — Leap

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2020-12662",
  "cveTags": [],
  "metrics": {
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          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
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          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
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  "published": "2020-05-19T14:15:11.190",
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Unbound before 1.10.1 has Insufficient Control of Network Message Volume, aka an \"NXNSAttack\" issue. This is triggered by random subdomains in the NSDNAME in NS records."
    },
    {
      "lang": "es",
      "value": "Unbound versiones anteriores a 1.10.1, presenta un Control Insuficiente del Volumen de Mensajes de Red, también se conoce como un problema de \"NXNSAttack\". Esto es activado por subdominios aleatorios en NSDNAME en registros NS."
    }
  ],
  "lastModified": "2026-06-17T02:52:05.760",
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