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CVE-2016-7479

Estado: ModificadaCrítica (9.8)—

En todas las versiones de PHP 7, durante el proceso no serializado, redimensionando las "propiedades" de la tabla hash de un objeto serializado puede conducir a un uso después de liberación de memoria. Un atacante remoto puede explotar este error para obtener ejecución de código arbitraria.

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).

Tecnologías afectadas (1)

PHP — PHP

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2016-7479",
  "cveTags": [],
  "metrics": {
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
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          "baseScore": 7.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
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          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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        "impactScore": 5.9,
        "exploitabilityScore": 3.9
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  "affected": [
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      "source": "cve@checkpoint.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "PHP 7.x",
          "versions": [
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  "published": "2017-01-12T00:59:00.140",
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      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Modified",
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      "source": "nvd@nist.gov",
      "description": [
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          "lang": "en",
          "value": "CWE-416"
        }
      ]
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    {
      "lang": "en",
      "value": "In all versions of PHP 7, during the unserialization process, resizing the 'properties' hash table of a serialized object may lead to use-after-free. A remote attacker may exploit this bug to gain arbitrary code execution."
    },
    {
      "lang": "es",
      "value": "En todas las versiones de PHP 7, durante el proceso no serializado, redimensionando las \"propiedades\" de la tabla hash de un objeto serializado puede conducir a un uso después de liberación de memoria. Un atacante remoto puede explotar este error para obtener ejecución de código arbitraria."
    }
  ],
  "lastModified": "2026-06-17T00:53:08.100",
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