CVE-2019-17543

Estado: ModificadaAlta (8.1)—
LZ4 before 1.9.2 has a heap-based buffer overflow in LZ4_write32 (related to LZ4_compress_destSize), affecting applications that call LZ4_compress_fast with a large input. (This issue can also lead to data corruption.) NOTE: the vendor states "only a few specific / uncommon usages of the API are at risk."
CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Puntuación base: 8.1
Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 9.12%
Percentil entre todas las CVEs puntuadas: 95
Fecha de la puntuación: 3/10/2026
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)

LZ4 Project — LZ4
CWE

CWE-787
Referencias

JSON original (NVD)

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  "id": "CVE-2019-17543",
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          "authentication": "NONE",
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  "weaknesses": [
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      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
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      "lang": "en",
      "value": "LZ4 before 1.9.2 has a heap-based buffer overflow in LZ4_write32 (related to LZ4_compress_destSize), affecting applications that call LZ4_compress_fast with a large input. (This issue can also lead to data corruption.) NOTE: the vendor states \"only a few specific / uncommon usages of the API are at risk.\""
    },
    {
      "lang": "es",
      "value": "LZ4 versiones anteriores a 1.9.2, presenta un desbordamiento de búfer en la región heap de la memoria en LZ4_write32 (relacionado con la función LZ4_compress_destSize), que afecta a las aplicaciones que llaman a LZ4_compress_fast con una entrada larga. (Este problema también puede conllevar a la corrupción de datos). NOTA: el fabricante indica que \"solo unos pocos usos específicos / poco comunes de la API están en riesgo\"."
    }
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  "lastModified": "2026-06-17T02:24:06.950",
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