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CVE-2026-13433

Estado: AnalizadaCrítica (9.6)—

IBM i Access Client Solutions 1.1.2.0 through 1.1.9.13 (ACS) is vulnerable to downloading unverified product code when configured to update from an IBM i. A bad actor could use this vulnerablity to run compromised code on the ACS user's workstation.

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.

ACS descarga código de producto sin verificación desde IBM i (cadena suministro). Vector AV:A indica red adyacente; CWE-494 confirma descarga insegura. Atacante ejecuta código comprometido en la estación del usuario.

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

Limit Software InstallationApplication Developer GuidanceVulnerability ScanningUser Account ManagementRestrict Web-Based ContentPrivileged Account Management

Tecnologías afectadas (1)

IBM — I Access Client Solutions

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-13433",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-13433",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-08-13T14:08:41.054578Z"
        }
      }
    ],
    "cvssMetricV31": [
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          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
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        "exploitabilityScore": 1.6
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
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          "attackVector": "ADJACENT_NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
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          "availabilityImpact": "HIGH",
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          "confidentialityImpact": "HIGH"
        },
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      }
    ]
  },
  "affected": [
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      "affectedData": [
        {
          "cpes": [
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            "cpe:2.3:a:ibm:i_access_client_solutions:1.1.9.13:*:*:*:*:*:*:*"
          ],
          "vendor": "IBM",
          "product": "i Access Client Solutions",
          "versions": [
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              "status": "affected",
              "version": "1.1.2.0",
              "versionType": "semver",
              "lessThanOrEqual": "1.1.9.13"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-08-12T21:17:35.380",
  "references": [
    {
      "url": "https://www.ibm.com/support/pages/node/7282954",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "psirt@us.ibm.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "psirt@us.ibm.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-494"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "IBM i Access Client Solutions 1.1.2.0 through 1.1.9.13 (ACS) is vulnerable to downloading unverified product code when configured to update from an IBM i. A bad actor could use this vulnerablity to run compromised code on the ACS user's workstation."
    }
  ],
  "lastModified": "2026-08-18T14:46:08.517",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "versionEndExcluding": "1.1.9.14",
              "versionStartIncluding": "1.1.2"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "psirt@us.ibm.com"
}