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CVE-2021-21224

Estado: AnalizadaAlta (8.8)⚠ Explotación activa

Una confusión de tipos en V8 en Google Chrome versiones anteriores a 90.0.4430.85, permitía a un atacante remoto ejecutar código arbitrario dentro del sandbox por medio 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

🎯 Técnicas ATT&CK

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

Vector AV:N/AC:L/PR:N/UI:R indica explotación remota con interacción del usuario (HTML crafted). Type confusion en V8 permite ejecución de código arbitrario en sandbox, alineado con T1203. Impacto principal es ejecución de comandos (T1059); acceso a datos secundario por capacidades del código ejecut

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 (3)

Debian — Debian LinuxFedoraproject — FedoraGoogle — Chrome

CWE

Referencias

JSON original (NVD)

Mostrar
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      "value": "Type confusion in V8 in Google Chrome prior to 90.0.4430.85 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page."
    },
    {
      "lang": "es",
      "value": "Una confusión de tipos en V8 en Google Chrome versiones anteriores a 90.0.4430.85, permitía a un atacante remoto ejecutar código arbitrario dentro del sandbox por medio de una página HTML diseñada"
    }
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  "lastModified": "2026-06-17T03:35:04.383",
  "cisaActionDue": "2021-11-17",
  "cisaExploitAdd": "2021-11-03",
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  "cisaRequiredAction": "Apply updates per vendor instructions.",
  "cisaVulnerabilityName": "Google Chromium V8 Type Confusion Vulnerability"
}