CVE-2026-42001

Estado: AnalizadaAlta (7.5)—

Insufficient Validation of Autoprimary SOA Queries

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Puntuación base: 7.5

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.80%
Percentil entre todas las CVEs puntuadas: 55
Fecha de la puntuación: 4/10/2026

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

ExplotaciónT1190 Exploit Public-Facing Applicationinitial access85 %
Impacto principalT1499.004 Application or System Exploitationimpact80 %

Vector CVSS AV:N/PR:N/UI:N indica explotación remota sin privilegios (T1190). CWE-400 y descripción apuntan a validación insuficiente causando consumo de recursos; A:H confirma impacto de disponibilidad (DoS por protocolo de red T1499.004).

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Filter Network Traffic Vulnerability Scanning Privileged Account Management Network Segmentation Limit Access to Resource Over Network Application Isolation and Sandboxing

Tecnologías afectadas (1)

Powerdns — Authoritative

CWE

CWE-400

Referencias

https://docs.powerdns.com/authoritative/security-advisories/powerdns-advisory-powerdns-2026-06.html

JSON original (NVD)

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{
  "id": "CVE-2026-42001",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-42001",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-05-21T12:00:49.119135Z"
        }
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    "cvssMetricV31": [
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          "attackVector": "NETWORK",
          "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"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "security@open-xchange.com",
      "affectedData": [
        {
          "repo": "https://github.com/PowerDNS/pdns",
          "vendor": "PowerDNS",
          "modules": [
            "auto-secondary"
          ],
          "product": "Authoritative",
          "versions": [
            {
              "status": "affected",
              "version": "4.9.0",
              "lessThan": "4.9.15",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "5.0.0",
              "lessThan": "5.0.5",
              "versionType": "semver"
            }
          ],
          "packageName": "pdns",
          "programFiles": [
            "resolver.cc"
          ],
          "collectionURL": "https://repo.powerdns.com/",
          "defaultStatus": "unaffected"
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    }
  ],
  "published": "2026-05-21T10:16:25.683",
  "references": [
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      "tags": [
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      "description": [
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          "lang": "en",
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Insufficient Validation of Autoprimary SOA Queries"
    },
    {
      "lang": "es",
      "value": "Validación insuficiente de consultas SOA autoprimarias"
    }
  ],
  "lastModified": "2026-07-23T16:10:00.137",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "criteria": "cpe:2.3:a:powerdns:authoritative:*:*:*:*:*:*:*:*",
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            },
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              "versionEndExcluding": "5.0.5",
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          "operator": "OR"
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  "sourceIdentifier": "security@open-xchange.com"
}