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CVE-2019-5786

Estado: AnalizadaMedia (6.5)⚠ Explotación activa💥 Exploit

El problema de la vida útil del objeto en Blink en Google Chrome antes del 72.0.3626.121 permitió que un atacante remoto pudiera realizar un acceso a la memoria fuera de límites a través de una página HTML diseñada.

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).

CISA KEV — explotada activamente

💥 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.

⚠️ Las pruebas de concepto de GitHub no están verificadas: algunas son falsas o contienen malware. No las ejecute nunca fuera de un laboratorio aislado.

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Vulnerabilidad en navegador requiere interacción del usuario (UI:R) con página HTML maliciosa (AV:N). CWE-416 (use-after-free) permite acceso a memoria causando DoS de alta severidad.

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

Application Isolation and SandboxingExploit ProtectionUpdate Software

Tecnologías afectadas (1)

Google — Chrome

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2019-5786",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2019-5786",
          "role": "CISA Coordinator",
          "options": [
            {
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            },
            {
              "automatable": "no"
            },
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            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-02-11T14:09:14.133095Z"
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    "cvssMetricV2": [
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        "source": "nvd@nist.gov",
        "cvssData": {
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          "baseScore": 4.3,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
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        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
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    ]
  },
  "affected": [
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      "affectedData": [
        {
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          "product": "Chrome",
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  ],
  "published": "2019-06-27T17:15:13.770",
  "references": [
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      "url": "https://chromereleases.googleblog.com/2019/03/stable-channel-update-for-desktop.html",
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        "Vendor Advisory"
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    },
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    },
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      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-5786",
      "tags": [
        "US Government Resource"
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "source": "nvd@nist.gov",
      "description": [
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        }
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    },
    {
      "type": "Secondary",
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      "description": [
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          "value": "CWE-416"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Object lifetime issue in Blink in Google Chrome prior to 72.0.3626.121 allowed a remote attacker to potentially perform out of bounds memory access via a crafted HTML page."
    },
    {
      "lang": "es",
      "value": "El problema de la vida útil del objeto en Blink en Google Chrome antes del 72.0.3626.121 permitió que un atacante remoto pudiera realizar un acceso a la memoria fuera de límites a través de una página HTML diseñada."
    }
  ],
  "lastModified": "2026-06-17T02:38:12.210",
  "cisaActionDue": "2022-06-13",
  "cisaExploitAdd": "2022-05-23",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
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              "vulnerable": true,
              "matchCriteriaId": "02228892-1167-4B29-BF3E-25B03706754C",
              "versionEndExcluding": "72.0.3626.121"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "chrome-cve-admin@google.com",
  "cisaRequiredAction": "Apply updates per vendor instructions.",
  "cisaVulnerabilityName": "Google Chrome Blink Use-After-Free Vulnerability"
}