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CVE-2026-34398

Estado: Pendiente de análisisAlta (7.8)—

FreeCAD is a free and open-source multiplatform 3D parametric modeler. From 0.19 until 1.1.1, src/Mod/BIM/bimcommands/BimProjectManager.py in the BIM Project Manager Load Template flow passes attacker-controlled FCStd Meta property values for wpposition, wpu, wpv, and wpaxis directly to eval(), allowing arbitrary Python code execution when a user loads a malicious BIM project template. This issue is fixed in version 1.1.1.

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.

CWE-95 (ejecución de código no restringida) con AV:L, UI:R y acceso sin privilegios. El usuario debe cargar un proyecto BIM malicioso (.FCStd), lo que ejecuta código Python arbitrario mediante eval().

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

Restrict Web-Based ContentPrivileged Account ManagementLimit Software InstallationExecution PreventionBehavior Prevention on EndpointDisable 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.

Freecadweb — FreecadAI

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-34398",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-34398",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-08-18T00:00:00+00:00"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "FreeCAD",
          "product": "FreeCAD",
          "versions": [
            {
              "status": "affected",
              "version": ">= 0.19, < 1.1.1"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-08-17T21:16:44.130",
  "references": [
    {
      "url": "https://github.com/FreeCAD/FreeCAD/commit/871ee19b76224910332bbfbd39eebbede967998b",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/FreeCAD/FreeCAD/commit/9ed351cc4700db0a94c46f020c34c58bbf1bdaba",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/FreeCAD/FreeCAD/pull/28610",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/FreeCAD/FreeCAD/releases/tag/1.1.1",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/FreeCAD/FreeCAD/security/advisories/GHSA-8rfj-7956-6gwf",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/FreeCAD/FreeCAD/security/advisories/GHSA-8rfj-7956-6gwf",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-95"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "FreeCAD is a free and open-source multiplatform 3D parametric modeler. From 0.19 until 1.1.1, src/Mod/BIM/bimcommands/BimProjectManager.py in the BIM Project Manager Load Template flow passes attacker-controlled FCStd Meta property values for wpposition, wpu, wpv, and wpaxis directly to eval(), allowing arbitrary Python code execution when a user loads a malicious BIM project template. This issue is fixed in version 1.1.1."
    }
  ],
  "lastModified": "2026-09-09T21:11:25.743",
  "sourceIdentifier": "security-advisories@github.com"
}