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CVE-2023-49083

Estado: ModificadaAlta (7.5)—

cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Calling `load_pem_pkcs7_certificates` or `load_der_pkcs7_certificates` could lead to a NULL-pointer dereference and segfault. Exploitation of this vulnerability poses a serious risk of Denial of Service (DoS) for any application attempting to deserialize a PKCS7 blob/certificate. The consequences extend to potential disruptions in system availability and stability. This vulnerability has been patched in version 41.0.6.

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).

Tecnologías afectadas (1)

Cryptography.io — Cryptography

CWE

Referencias

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{
  "id": "CVE-2023-49083",
  "cveTags": [],
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          "version": "2.0.3",
          "timestamp": "2025-12-18T15:31:36.864359Z"
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          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
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        "exploitabilityScore": 2.2
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          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
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  "vulnStatus": "Modified",
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      "description": [
        {
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          "value": "CWE-476"
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  "descriptions": [
    {
      "lang": "en",
      "value": "cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. Calling `load_pem_pkcs7_certificates` or `load_der_pkcs7_certificates` could lead to a NULL-pointer dereference and segfault. Exploitation of this vulnerability poses a serious risk of Denial of Service (DoS) for any application attempting to deserialize a PKCS7 blob/certificate. The consequences extend to potential disruptions in system availability and stability. This vulnerability has been patched in version 41.0.6."
    },
    {
      "lang": "es",
      "value": "cryptography es un paquete diseñado para exponer recetas y primitivas criptográficas a los desarrolladores de Python. Llamar a `load_pem_pkcs7_certificates` o `load_der_pkcs7_certificates` podría provocar una desreferencia de puntero NULL y un error de segmentación. La explotación de esta vulnerabilidad plantea un grave riesgo de Denegación de Servicio (DoS) para cualquier aplicación que intente deserializar un blob/certificado PKCS7. Las consecuencias se extienden a posibles interrupciones en la disponibilidad y estabilidad del sistema. Esta vulnerabilidad ha sido parcheada en la versión 41.0.6."
    }
  ],
  "lastModified": "2026-06-17T06:35:19.820",
  "configurations": [
    {
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