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CVE-2026-17276

Estado: AnalizadaCrítica (9.9)—

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to escalate privileges due to improper authorization in the handling of high-authority threads.

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.

Acceso remoto autenticado (PR:L) sin interacción. Escalada de privilegios por manejo deficiente de threads de alta autoridad en IBM i, resultado en acceso CRITICAL con control total del sistema.

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

Threat Intelligence ProgramApplication Isolation and SandboxingExploit ProtectionUpdate SoftwareVulnerability ScanningPrivileged Account Management

Tecnologías afectadas (1)

IBM — I

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-17276",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-17276",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-08-12T17:58:26.967193Z"
        }
      }
    ],
    "cvssMetricV31": [
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        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
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          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.8,
        "exploitabilityScore": 3.1
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
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          "userInteraction": "NONE",
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          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
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      }
    ]
  },
  "affected": [
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      "affectedData": [
        {
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            "cpe:2.3:a:ibm:i:7.6.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:i:7.5:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:i:7.5.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:i:7.4:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:i:7.4.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:i:7.3:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:i:7.3.0:*:*:*:*:*:*:*"
          ],
          "vendor": "IBM",
          "product": "i",
          "versions": [
            {
              "status": "affected",
              "version": "7.6"
            },
            {
              "status": "affected",
              "version": "7.5"
            },
            {
              "status": "affected",
              "version": "7.4"
            },
            {
              "status": "affected",
              "version": "7.3"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-08-12T18:17:26.680",
  "references": [
    {
      "url": "https://www.ibm.com/support/pages/node/7283292",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "psirt@us.ibm.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "psirt@us.ibm.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-269"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote authenticated attacker to escalate privileges due to improper authorization in the handling of high-authority threads."
    }
  ],
  "lastModified": "2026-08-13T16:28:39.813",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:ibm:i:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "46DEA5F3-B160-471F-8C4C-0E8338EDEDA5",
              "versionEndIncluding": "7.6",
              "versionStartIncluding": "7.3"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "psirt@us.ibm.com"
}