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CVE-2009-1786

Estado: ModificadaMedia (6.9)—Exploit
Gravedad6.9Media · CVSS 2.0
Probabilidad de explotación0.67 %mayor que el 51 % de las CVE
Explotación activaNono figura en el catálogo de CISA
Exploit públicoDisponiblePublicado en Exploit-DB

El subsistema malloc en libc en IBM AIX v5.3 y v6.1 permite a usuarios locales crear o sobrescribir ficheros de forma arbitraria a través de un ataque de enlace simbólico en el fichero log asociado con la variable de entorno MALLOCDEBUG.

CVSS

Puntuación base
6.9
Versión
2.0
Vector
AV:L/AC:M/Au:N/C:C/I:C/A:C

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días
0.67 %
Percentil entre todas las CVEs puntuadas
51
Fecha de la puntuación
20/10/2026

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).

Exploits públicos

Hay código de explotación o plantillas de detección públicos. No es lo mismo que explotación activa confirmada (KEV), pero aumenta el riesgo: parchee con prioridad.

Tecnologías afectadas (1)

IBM — AIX

CWE

Referencias

Mostrar las 34 referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2009-1786",
  "cveTags": [],
  "metrics": {
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        "source": "nvd@nist.gov",
        "cvssData": {
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          "baseScore": 6.9,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:M/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": true,
        "exploitabilityScore": 3.4,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
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  },
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      "affectedData": [
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          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
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    }
  ],
  "published": "2009-05-26T15:30:05.390",
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          "lang": "en",
          "value": "CWE-362"
        }
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    {
      "lang": "en",
      "value": "The malloc subsystem in libc in IBM AIX 5.3 and 6.1 allows local users to create or overwrite arbitrary files via a symlink attack on the log file associated with the MALLOCDEBUG environment variable."
    },
    {
      "lang": "es",
      "value": "El subsistema malloc en libc en IBM AIX v5.3 y v6.1 permite a usuarios locales crear o sobrescribir ficheros de forma arbitraria a través de un ataque de enlace simbólico en el fichero log asociado con la variable de entorno MALLOCDEBUG."
    }
  ],
  "lastModified": "2026-06-16T23:08:03.400",
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}