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CVE-2026-40528

Estado: AnalizadaBaja (1)—

OpenSC before 0.27.0, fixed in commit 0358817, contains a stack and heap buffer overrun vulnerability in the do_key_value() function in src/pkcs15init/profile.c that allows attackers to corrupt memory by supplying a crafted profile configuration file. During pkcs15-init invocation, a key value entry beginning with '=' followed by more than sizeof(keybuf) characters is copied into keybuf via memcpy without a length check, causing both stack and heap buffer overruns.

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)

Opensc Project — Opensc

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2026-40528",
  "cveTags": [],
  "metrics": {
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          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "none"
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              "automatable": "no"
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              "technicalImpact": "partial"
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          "version": "2.0.3",
          "timestamp": "2026-05-29T13:58:10.279206Z"
        }
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    "cvssMetricV31": [
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          "Automatable": "NOT_DEFINED",
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          "valueDensity": "NOT_DEFINED",
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          "exploitMaturity": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED",
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          "integrityRequirement": "NOT_DEFINED",
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          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
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          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
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      "affectedData": [
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          "vendor": "OpenSC",
          "product": "OpenSC",
          "versions": [
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              "lessThan": "0.27.0",
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  "published": "2026-05-29T14:16:26.730",
  "references": [
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      "url": "https://github.com/OpenSC/OpenSC/commit/0358817ec74aeca654f83e7709c7720b14c5db59",
      "tags": [
        "Patch"
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    {
      "url": "https://www.vulncheck.com/advisories/opensc-buffer-overrun-in-do-key-value-via-profile-c",
      "tags": [
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  "weaknesses": [
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      "description": [
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          "value": "CWE-121"
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  ],
  "descriptions": [
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      "lang": "en",
      "value": "OpenSC before 0.27.0, fixed in commit 0358817, contains a stack and heap buffer overrun vulnerability in the do_key_value() function in src/pkcs15init/profile.c that allows attackers to corrupt memory by supplying a crafted profile configuration file. During pkcs15-init invocation, a key value entry beginning with '=' followed by more than sizeof(keybuf) characters is copied into keybuf via memcpy without a length check, causing both stack and heap buffer overruns."
    },
    {
      "lang": "es",
      "value": "OpenSC antes de 0.27.0, corregido en el commit 0358817, contiene una vulnerabilidad de desbordamiento de búfer de pila y de montón en la función do_key_value() en src/pkcs15init/profile.c que permite a los atacantes corromper la memoria al proporcionar un archivo de configuración de perfil manipulado. Durante la invocación de pkcs15-init, una entrada de valor de clave que comienza con '=' seguida de más de sizeof(keybuf) caracteres se copia en keybuf a través de memcpy sin una verificación de longitud, causando desbordamientos de búfer tanto de pila como de montón."
    }
  ],
  "lastModified": "2026-07-21T12:10:00.090",
  "configurations": [
    {
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