CVE-2016-5399

Estado: ModificadaAlta (7.8)—💥 Exploit

La función bzread en ext/bz2/bz2.c en PHP en versiones anteriores a 5.5.38, 5.6.x en versiones anteriores a 5.6.24, y 7.x en versiones anteriores a 7.0.9 permite a atacantes remotos provocar una denegación de servicio (escritura fuera de limites) o ejecutar código arbitrario a través de un archivo bz2 manipulado.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Puntuación base: 7.8

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 9.84%
Percentil entre todas las CVEs puntuadas: 96
Fecha de la puntuación: 17/10/2026

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.

Publicado en Exploit-DB · PHP 5.5.37/5.6.23/7.0.8 - 'bzread()' Out-of-Bounds Write (25/7/2016)

Tecnologías afectadas (1)

PHP — PHP

CWE

CWE-787

Referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2016-5399",
  "cveTags": [],
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          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
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        "acInsufInfo": false,
        "impactScore": 6.4,
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          "attackComplexity": "LOW",
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      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
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    {
      "lang": "en",
      "value": "The bzread function in ext/bz2/bz2.c in PHP before 5.5.38, 5.6.x before 5.6.24, and 7.x before 7.0.9 allows remote attackers to cause a denial of service (out-of-bounds write) or execute arbitrary code via a crafted bz2 archive."
    },
    {
      "lang": "es",
      "value": "La función bzread en ext/bz2/bz2.c en PHP en versiones anteriores a 5.5.38, 5.6.x en versiones anteriores a 5.6.24, y 7.x en versiones anteriores a 7.0.9 permite a atacantes remotos provocar una denegación de servicio (escritura fuera de limites) o ejecutar código arbitrario a través de un archivo bz2 manipulado."
    }
  ],
  "lastModified": "2026-06-17T00:49:20.413",
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    {
      "nodes": [
        {
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}