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CVE-2026-92943

Estado: Pendiente de análisisCrítica (9.2)—

Improper validation of certificate with host mismatch in the MQTT client TLS connection layer in AWS IoT Device SDK for Python 1.5.3 through 1.6.0 on Python 3.7 and later might allow an adversary-in-the-middle actor to impersonate the AWS IoT Core endpoint, read device telemetry, and inject arbitrary MQTT messages that the device processes as authentic, via a certificate issued for an unrelated hostname by a certificate authority present in the device trust store.

To remediate this issue, users should upgrade to version 1.6.1.

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.

Certificado con validación incorrecta en TLS (CWE-297) permite interceptación MITM (AV:N, AT:P). Impactos: lectura de telemetría de dispositivo (T1005) e inyección de mensajes MQTT falsos procesados como auténticos.

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 TrainingNetwork SegmentationNetwork Intrusion PreventionLimit Access to Resource Over NetworkFilter Network TrafficEncrypt Sensitive Information

Tecnologías afectadas (1)

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

Amazon — IOT Device SDK FOR PythonAI

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2026-92943",
  "cveTags": [],
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          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
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          "valueDensity": "NOT_DEFINED",
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          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
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          "product": "AWSIoTPythonSDK",
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              "status": "affected",
              "version": "1.5.3",
              "versionType": "custom",
              "lessThanOrEqual": "1.6.0"
            }
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          "defaultStatus": "unaffected"
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  "published": "2026-09-17T20:18:59.333",
  "references": [
    {
      "url": "https://aws.amazon.com/security/security-bulletins/2026-114-aws/",
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      "description": [
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          "lang": "en",
          "value": "CWE-297"
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    }
  ],
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    {
      "lang": "en",
      "value": "Improper validation of certificate with host mismatch in the MQTT client TLS connection layer in AWS IoT Device SDK for Python 1.5.3 through 1.6.0 on Python 3.7 and later might allow an adversary-in-the-middle actor to impersonate the AWS IoT Core endpoint, read device telemetry, and inject arbitrary MQTT messages that the device processes as authentic, via a certificate issued for an unrelated hostname by a certificate authority present in the device trust store.\n\n\n\nTo remediate this issue, users should upgrade to version 1.6.1."
    }
  ],
  "lastModified": "2026-09-18T17:48:19.003",
  "sourceIdentifier": "ff89ba41-3aa1-4d27-914a-91399e9639e5"
}