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CVE-2022-40188

Estado: ModificadaAlta (7.5)—

Knot Resolver before 5.5.3 allows remote attackers to cause a denial of service (CPU consumption) because of algorithmic complexity. During an attack, an authoritative server must return large NS sets or address sets.

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 (3)

Debian — Debian LinuxFedoraproject — FedoraNIC — Knot Resolver

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2022-40188",
  "cveTags": [],
  "metrics": {
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        "ssvcData": {
          "id": "CVE-2022-40188",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-05-27T14:55:00.408266Z"
        }
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          "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
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      "affectedData": [
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          "vendor": "n/a",
          "product": "n/a",
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  "published": "2022-09-23T16:15:11.673",
  "references": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Modified",
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      "description": [
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          "value": "CWE-407"
        }
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    {
      "lang": "en",
      "value": "Knot Resolver before 5.5.3 allows remote attackers to cause a denial of service (CPU consumption) because of algorithmic complexity. During an attack, an authoritative server must return large NS sets or address sets."
    },
    {
      "lang": "es",
      "value": "Knot Resolver versiones anteriores a 5.5.3, permite a atacantes remotos causar una denegación de servicio (consumo de CPU) debido a una complejidad del algoritmo. Durante un ataque, un servidor autoritativo debe devolver grandes conjuntos de NS o conjuntos de direcciones."
    }
  ],
  "lastModified": "2026-06-17T05:01:04.503",
  "configurations": [
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        {
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}