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CVE-2021-25741

Estado: ModificadaAlta (8.1)—💥 PoC

A security issue was discovered in Kubernetes where a user may be able to create a container with subpath volume mounts to access files & directories outside of the volume, including on the host filesystem.

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).

💥 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.

Tecnologías afectadas (1)

Kubernetes — Kubernetes

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2021-25741",
  "cveTags": [],
  "metrics": {
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        "ssvcData": {
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          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "none"
            },
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          "version": "2.0.3",
          "timestamp": "2024-08-20T13:25:58.469004Z"
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          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
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        },
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        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
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        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
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      }
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    "cvssMetricV31": [
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        "cvssData": {
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              "version": "1.20.0",
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              "version": "1.21.0",
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  "published": "2021-09-20T17:15:08.343",
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  "vulnStatus": "Modified",
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      "description": [
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          "value": "CWE-20"
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      "lang": "en",
      "value": "A security issue was discovered in Kubernetes where a user may be able to create a container with subpath volume mounts to access files & directories outside of the volume, including on the host filesystem."
    },
    {
      "lang": "es",
      "value": "Se ha detectado un problema de seguridad en Kubernetes en el que un usuario puede ser capaz de crear un contenedor con montajes de volumen de sub-ruta para acceder a archivos y directorios fuera del volumen, incluso en el sistema de archivos del host"
    }
  ],
  "lastModified": "2026-06-17T03:42:23.107",
  "configurations": [
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}