CVE-2026-76280

Estado: En análisisMedia (6.3)—

En las versiones de Splunk Enterprise inferiores a 10.4.3, 10.2.7, 10.0.10 y 9.4.15, y en las versiones de Splunk Secure Gateway inferiores a 3.10.11, 3.9.25 y 3.8.72, un usuario autenticado que no tenga los roles de Splunk "admin" o "sc_admin" podía modificar los datos de destinatarios de alertas y de dispositivos móviles de Splunk Secure Gateway en colecciones de App Key Value Store (KV Store) que utilizan posteriormente los flujos de trabajo de alertas y suscripciones.

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La vulnerabilidad es posible porque las colecciones afectadas permiten un acceso de escritura sin restricciones en lugar de limitar las escrituras a los flujos de trabajo autorizados de Splunk Secure Gateway. Para más información, consulte About the app key value store (https://help.splunk.com/en/splunk-enterprise/administer/admin-manual/10.4/administer-the-app-key-value-store/about-the-app-key-value-store), KV store endpoint descriptions (https://help.splunk.com/en/splunk-enterprise/leverage-rest-apis/rest-api-reference/10.4/kv-store-endpoints/kv-store-endpoint-descriptions) y About configuring role-based user access (https://help.splunk.com/en/splunk-enterprise/administer/manage-users-and-security/10.4/manage-splunk-platform-users-and-roles/about-configuring-role-based-user-access) en la documentación de Splunk.

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

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Puntuación base: 6.3

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.17%
Percentil entre todas las CVEs puntuadas: 6
Fecha de la puntuación: 13/10/2026

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.

ExplotaciónT1210 Exploitation of Remote Serviceslateral movement75 %
Impacto principalT1565.001 Stored Data Manipulationimpact80 %
Impacto secundarioT1098.002 Additional Email Delegate Permissionspersistence · privilege escalation65 %

Acceso autenticado remoto (AV:N, PR:L) a servicio Splunk para modificar datos de KV Store sin autorización (CWE-732: permisos insuficientes). Impacto: manipulación de datos de alertas y dispositivos móviles en workflows posteriores.

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 Management Disable or Remove Feature or Program Vulnerability Scanning Threat Intelligence Program Restrict File and Directory Permissions Remote Data Storage

Tecnologías afectadas (2)

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

Splunk — Splunk Enterprise^AI Splunk — Splunk Secure Gateway^AI

CWE

CWE-732

Referencias

https://advisory.splunk.com/advisories/SVD-2026-1001

JSON original (NVD)

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{
  "id": "CVE-2026-76280",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-76280",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-10-09T16:15:39.990544Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "psirt@cisco.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 3.4,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "psirt@cisco.com",
      "affectedData": [
        {
          "vendor": "Splunk",
          "modules": [
            "REST API"
          ],
          "product": "Splunk Enterprise",
          "versions": [
            {
              "status": "affected",
              "version": "10.4",
              "lessThan": "10.4.3",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "10.2",
              "lessThan": "10.2.7",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "10.0",
              "lessThan": "10.0.10",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "9.4",
              "lessThan": "9.4.15",
              "versionType": "custom"
            }
          ]
        },
        {
          "vendor": "Splunk",
          "product": "Splunk Secure Gateway",
          "versions": [
            {
              "status": "affected",
              "version": "3.10",
              "lessThan": "3.10.11",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "3.9",
              "lessThan": "3.9.25",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "3.8",
              "lessThan": "3.8.72",
              "versionType": "custom"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-10-07T21:17:19.327",
  "references": [
    {
      "url": "https://advisory.splunk.com/advisories/SVD-2026-1001",
      "source": "psirt@cisco.com"
    }
  ],
  "vulnStatus": "Undergoing Analysis",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "psirt@cisco.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-732"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In Splunk Enterprise versions below 10.4.3, 10.2.7, 10.0.10, and 9.4.15, and Splunk Secure Gateway versions below 3.10.11, 3.9.25, and 3.8.72, an authenticated user who does not hold the \"admin\" or \"sc_admin\" Splunk roles could modify Splunk Secure Gateway alert and mobile-device recipient data in App Key Value Store (KV Store) collections that later alert and subscription workflows use. The vulnerability is possible because the affected collections allow unrestricted write access instead of limiting writes to authorized Splunk Secure Gateway workflows. For more information see About the app key value store (https://help.splunk.com/en/splunk-enterprise/administer/admin-manual/10.4/administer-the-app-key-value-store/about-the-app-key-value-store), KV store endpoint descriptions (https://help.splunk.com/en/splunk-enterprise/leverage-rest-apis/rest-api-reference/10.4/kv-store-endpoints/kv-store-endpoint-descriptions), and About configuring role-based user access (https://help.splunk.com/en/splunk-enterprise/administer/manage-users-and-security/10.4/manage-splunk-platform-users-and-roles/about-configuring-role-based-user-access) in the Splunk documentation."
    }
  ],
  "lastModified": "2026-10-09T17:16:49.100",
  "sourceIdentifier": "psirt@cisco.com"
}