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CVE-2026-12666

Estado: Pendiente de análisisAlta (8.1)—

IBM MQ 9.1.0.0 through 9.1.0.37 LTS, 9.2.0.0 through 9.2.0.43 LTS, 9.3.0.0 through 9.3.0.41 LTS, 9.3.0.0 through 9.3.5.1 CD, 9.4.0.0 through 9.4.0.25 LTS, 9.4.0.0 through 9.4.5.1 CD, and 10.0.0.0 Classes for Java could allow an authenticated attacker to obtain sensitive information or cause a denial of service due to XML external entity injection in MQRFH2 header processing.

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.

AV:N, PR:L, AC:L indica explotación de servicio remoto con privilegios (T1210). XML external entity injection (CWE-611) en procesamiento de mensajes permite lectura de datos sensibles (T1005) y DoS (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

Vulnerability ScanningThreat Intelligence ProgramPrivileged Account ManagementNetwork SegmentationFilter Network TrafficDisable or Remove Feature or Program

Tecnologías afectadas (1)

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

IBM — MQAI

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-12666",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-12666",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-09-17T16:21:49.943491Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "psirt@us.ibm.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.1,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.2,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "psirt@us.ibm.com",
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:ibm:mq:9.1.0.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:mq:9.1.0.37:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:mq:9.2.0.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:mq:9.2.0.43:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:mq:9.3.0.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:mq:9.3.0.41:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:mq:9.3.5.1:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:mq:9.4.0.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:mq:9.4.0.25:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:mq:9.4.5.1:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:mq:10.0.0.0:*:*:*:*:*:*:*"
          ],
          "vendor": "IBM",
          "product": "MQ",
          "versions": [
            {
              "status": "affected",
              "version": "9.1.0.0",
              "versionType": "semver",
              "lessThanOrEqual": "9.1.0.37 LTS"
            },
            {
              "status": "affected",
              "version": "9.2.0.0",
              "versionType": "semver",
              "lessThanOrEqual": "9.2.0.43 LTS"
            },
            {
              "status": "affected",
              "version": "9.3.0.0",
              "versionType": "semver",
              "lessThanOrEqual": "9.3.0.41 LTS"
            },
            {
              "status": "affected",
              "version": "9.3.0.0",
              "versionType": "semver",
              "lessThanOrEqual": "9.3.5.1 CD"
            },
            {
              "status": "affected",
              "version": "9.4.0.0",
              "versionType": "semver",
              "lessThanOrEqual": "9.4.0.25 LTS"
            },
            {
              "status": "affected",
              "version": "9.4.0.0",
              "versionType": "semver",
              "lessThanOrEqual": "9.4.5.1 CD"
            },
            {
              "status": "affected",
              "version": "10.0.0.0"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-09-15T18:17:14.290",
  "references": [
    {
      "url": "https://www.ibm.com/support/pages/node/7284939",
      "source": "psirt@us.ibm.com"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "psirt@us.ibm.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-611"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "IBM MQ 9.1.0.0 through 9.1.0.37 LTS, 9.2.0.0 through 9.2.0.43 LTS, 9.3.0.0 through 9.3.0.41 LTS, 9.3.0.0 through 9.3.5.1 CD, 9.4.0.0 through 9.4.0.25 LTS, 9.4.0.0 through 9.4.5.1 CD, and 10.0.0.0 Classes for Java could allow an authenticated attacker to obtain sensitive information or cause a denial of service due to XML external entity injection in MQRFH2 header processing."
    }
  ],
  "lastModified": "2026-09-17T17:16:38.630",
  "sourceIdentifier": "psirt@us.ibm.com"
}