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CVE-2026-20266

Estado: AnalizadaCrítica (9.1)—

In Splunk AI Toolkit versions below 5.7.4, a user who holds the "admin" Splunk role could execute arbitrary OS commands on the host running the Splunk Enterprise instance.

The vulnerability is possible because of an unsafe shell execution pattern in the btool configuration helper, which constructs OS command strings from dynamic parameters without disabling shell interpretation.

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 con PR:H indica acceso remoto requiriendo privilegios de admin. CWE-78 (OS command injection) confirma ejecución de comandos arbitrarios en el host.

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 (1)

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-20266",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-20266",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-06-17T18:03:52.980872Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
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        "cvssData": {
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          "baseScore": 9.1,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 6,
        "exploitabilityScore": 2.3
      }
    ]
  },
  "affected": [
    {
      "source": "psirt@cisco.com",
      "affectedData": [
        {
          "vendor": "Splunk",
          "product": "Splunk AI Toolkit",
          "versions": [
            {
              "status": "affected",
              "version": "5.7",
              "lessThan": "5.7.4",
              "versionType": "custom"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-06-17T18:17:40.900",
  "references": [
    {
      "url": "https://advisory.splunk.com/advisories/SVD-2026-0614",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "psirt@cisco.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
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      "source": "psirt@cisco.com",
      "description": [
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          "lang": "en",
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        }
      ]
    },
    {
      "type": "Secondary",
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    {
      "lang": "en",
      "value": "In Splunk AI Toolkit versions below 5.7.4, a user who holds the \"admin\" Splunk role could execute arbitrary OS commands on the host running the Splunk Enterprise instance.  \n\nThe vulnerability is possible because of an unsafe shell execution pattern in the btool configuration helper, which constructs OS command strings from dynamic parameters without disabling shell interpretation."
    }
  ],
  "lastModified": "2026-06-22T12:48:37.440",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:splunk:ai_toolkit:*:*:*:*:*:*:*:*",
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              "matchCriteriaId": "433FFA09-42E8-4DB0-8677-0357A6458FA4",
              "versionEndExcluding": "5.7.4",
              "versionStartIncluding": "5.7.0"
            }
          ],
          "operator": "OR"
        }
      ]
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  ],
  "sourceIdentifier": "psirt@cisco.com"
}