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CVE-2026-86831

Estado: Pendiente de análisisAlta (8.7)—

Improper validation of pod identifier uniqueness in aws-network-policy-agent in Amazon EKS Network Policy Agent before v1.4.0 might allow an authenticated remote user to bypass NetworkPolicy enforcement on co-located pods in other namespaces via crafted pod and namespace names that produce pod identifier collisions.

To remediate this issue, users should upgrade to Amazon EKS Network Policy Agent 1.4.0 or later and Amazon VPC CNI Managed Add-on v1.22.4 or later (which includes Network Policy Agent v1.4.0).

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).

🎯 Técnicas ATT&CK

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

Explotación de servicio remoto (network-policy-agent) por usuario autenticado con validación deficiente de identificadores de pod. Impacto: modificación de políticas de red (segmentation bypass) e impersonación en namespaces adyacentes.

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

User Account ManagementNetwork SegmentationVulnerability ScanningThreat Intelligence ProgramPrivileged Account ManagementMulti-factor Authentication

Tecnologías afectadas (2)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Amazon — EKS Network Policy AgentAIAmazon — VPC CNIAI

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2026-86831",
  "cveTags": [],
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        "ssvcData": {
          "id": "CVE-2026-86831",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
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            {
              "automatable": "no"
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          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
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          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
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  "published": "2026-09-16T20:17:36.980",
  "references": [
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      "url": "https://github.com/aws/amazon-vpc-cni-k8s/releases/tag/v1.22.4",
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      "url": "https://staging.prod.website.marketing.aws.dev/security/security-bulletins/2026-113-aws/",
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  ],
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      "description": [
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          "lang": "en",
          "value": "CWE-1289"
        }
      ]
    }
  ],
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    {
      "lang": "en",
      "value": "Improper validation of pod identifier uniqueness in aws-network-policy-agent in Amazon EKS Network Policy Agent before v1.4.0 might allow an authenticated remote user to bypass NetworkPolicy enforcement on co-located pods in other namespaces via crafted pod and namespace names that produce pod identifier collisions.\n\n\n\nTo remediate this issue, users should upgrade to Amazon EKS Network Policy Agent 1.4.0 or later and Amazon VPC CNI Managed Add-on v1.22.4 or later (which includes Network Policy Agent v1.4.0)."
    }
  ],
  "lastModified": "2026-09-17T17:16:51.353",
  "sourceIdentifier": "ff89ba41-3aa1-4d27-914a-91399e9639e5"
}