CVE-2026-88123

Estado: AnalizadaMedia (6.5)—
Gravedad6.5Media · CVSS 3.1
Probabilidad de explotación1.09 %mayor que el 65 % de las CVE
Explotación activaNono figura en el catálogo de CISA
Exploit públicoNo conocidosin código público localizado

Lectura fuera de límites en DNS Server permite a un atacante autorizado provocar una denegación de servicio a través de una red.

Traducción automática del texto original de NVD (en inglés).

CVSS

Puntuación base
6.5
Versión
3.1
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días
1.09 %
Percentil entre todas las CVEs puntuadas
65
Fecha de la puntuación
20/10/2026

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.

Lectura fuera de límites en DNS Server con PR:L en red (AV:N); el texto indica denegación de servicio por red, sin ejecución de código ni datos.

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

Tecnologías afectadas (5)

CWE

Referencias

Mostrar las 1 referencias

JSON original (NVD)

Mostrar
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          "role": "CISA Coordinator",
          "options": [
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            },
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            },
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          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
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        "exploitabilityScore": 2.8
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        {
          "vendor": "Microsoft",
          "product": "Windows Server 2022",
          "versions": [
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  ],
  "published": "2026-10-13T19:21:31.083",
  "references": [
    {
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88123",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "secure@microsoft.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "secure@microsoft.com",
      "description": [
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          "lang": "en",
          "value": "CWE-125"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Out-of-bounds read in DNS Server allows an authorized attacker to deny service over a network."
    }
  ],
  "lastModified": "2026-10-16T10:46:08.150",
  "configurations": [
    {
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        {
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}