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CVE-2026-93657

Estado: AplazadaAlta (8.7)—

hickory-resolver versions before 0.26.2 fail to propagate bogus DNSSEC proof states through the Resolver::lookup() and Resolver::lookup_ip() APIs, allowing invalid records to be returned as successful results. Attackers controlling the answering zone or positioned on the network path can have forged DNS records accepted as validated, bypassing DNSSEC authentication checks.

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).

🎯 Técnicas ATT&CK

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

Vulnerabilidad en validación DNSSEC de hickory-resolver expuesta en red (AV:N, sin autenticación). Permite inyectar registros DNS fraudulentos (T1553.006: subversión de confianza en certificados/validación). Atacante en ruta de red (T1557.002) puede explotar fallo de propagación de estados DNSSEC.

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

Privileged Account ManagementLimit Access to Resource Over NetworkFilter Network TrafficVulnerability ScanningUser TrainingRestrict Registry Permissions

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Hickory-resolver — Hickory-resolverAI

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2026-93657",
  "cveTags": [],
  "metrics": {
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        "ssvcData": {
          "id": "CVE-2026-93657",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
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            {
              "automatable": "yes"
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            {
              "technicalImpact": "partial"
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          "version": "2.0.3",
          "timestamp": "2026-09-21T16:28:49.154433Z"
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    "cvssMetricV31": [
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          "integrityImpact": "HIGH",
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          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
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          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
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      "affectedData": [
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          "versions": [
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              "version": "0",
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  ],
  "published": "2026-09-18T15:17:22.190",
  "references": [
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      "url": "https://github.com/hickory-dns/hickory-dns",
      "source": "disclosure@vulncheck.com"
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    {
      "url": "https://github.com/hickory-dns/hickory-dns/commit/30720f4fb22e5556ecbf26d2c8274ea4a9fdd238",
      "source": "disclosure@vulncheck.com"
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      "url": "https://github.com/hickory-dns/hickory-dns/pull/3871",
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      "url": "https://github.com/hickory-dns/hickory-dns/releases/tag/v0.26.2",
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      "url": "https://github.com/hickory-dns/hickory-dns/security/advisories/GHSA-5j98-2g5x-46v6",
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      "source": "disclosure@vulncheck.com"
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  "descriptions": [
    {
      "lang": "en",
      "value": "hickory-resolver versions before 0.26.2 fail to propagate bogus DNSSEC proof states through the Resolver::lookup() and Resolver::lookup_ip() APIs, allowing invalid records to be returned as successful results. Attackers controlling the answering zone or positioned on the network path can have forged DNS records accepted as validated, bypassing DNSSEC authentication checks."
    }
  ],
  "lastModified": "2026-09-22T20:53:07.383",
  "sourceIdentifier": "disclosure@vulncheck.com"
}