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CVE-2021-27852

Estado: AnalizadaCrítica (9.8)⚠ Explotación activa

Deserialization of Untrusted Data vulnerability in CheckboxWeb.dll of Checkbox Survey allows an unauthenticated remote attacker to execute arbitrary code. This issue affects: Checkbox Survey versions prior to 7.

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.

CVE-2021-27852 explota deserialización insegura (CWE-502) en aplicación web expuesta sin autenticación (AV:N, PR:N). Impacto confirmado: ejecución de código arbitrario (T1059); potencial manipulación de datos y acceso a información (I:H, C:H).

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

Privileged Account ManagementNetwork SegmentationVulnerability ScanningRestrict Web-Based ContentRestrict File and Directory PermissionsRemote Data Storage

Tecnologías afectadas (1)

Checkbox — Survey

CWE

Referencias

JSON original (NVD)

Mostrar
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          "version": "2.0.3",
          "timestamp": "2025-02-06T19:47:57.660138Z"
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    "cvssMetricV31": [
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        "type": "Secondary",
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        "cvssData": {
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  "published": "2021-05-27T21:15:20.567",
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  "weaknesses": [
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      "lang": "en",
      "value": "Deserialization of Untrusted Data vulnerability in CheckboxWeb.dll of Checkbox Survey allows an unauthenticated remote attacker to execute arbitrary code. This issue affects: Checkbox Survey versions prior to 7."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de Deserialización de Datos No Confiables en la biblioteca CheckboxWeb.dll de Checkbox Survey, permite a un atacante remoto no autenticado ejecutar código arbitrario. Este problema afecta: Checkbox Survey versiones anteriores a 7"
    }
  ],
  "lastModified": "2026-06-17T03:45:31.033",
  "cisaActionDue": "2022-05-02",
  "cisaExploitAdd": "2022-04-11",
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  "sourceIdentifier": "cret@cert.org",
  "cisaRequiredAction": "Versions 6 and earlier for this product are end-of-life and must be removed from agency networks. Versions 7 and later are not considered vulnerable.",
  "cisaVulnerabilityName": "Checkbox Survey Deserialization of Untrusted Data Vulnerability"
}