CVE-2020-7456

Estado: ModificadaMedia (6.8)—

In FreeBSD 12.1-STABLE before r361918, 12.1-RELEASE before p6, 11.4-STABLE before r361919, 11.3-RELEASE before p10, and 11.4-RC2 before p1, an invalid memory location may be used for HID items if the push/pop level is not restored within the processing of that HID item allowing an attacker with physical access to a USB port to be able to use a specially crafted USB device to gain kernel or user-space code execution.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Puntuación base: 6.8

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.56%
Percentil entre todas las CVEs puntuadas: 45
Fecha de la puntuación: 7/10/2026

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 (2)

Freebsd — Freebsd Netapp — Clustered Data Ontap

CWE

CWE-119

Referencias

JSON original (NVD)

Mostrar

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  "id": "CVE-2020-7456",
  "cveTags": [],
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        "source": "nvd@nist.gov",
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          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
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        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
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          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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        "impactScore": 5.9,
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  "affected": [
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      "source": "secteam@freebsd.org",
      "affectedData": [
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          "vendor": "n/a",
          "product": "FreeBSD",
          "versions": [
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              "version": "FreeBSD 12.1-RELEASE before p6, 11.3-RELEASE before p10, and 11.4-RC2 before p1"
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  "published": "2020-06-09T19:15:10.760",
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      "tags": [
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        "Vendor Advisory"
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      "tags": [
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      "url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-20:17.usb.asc",
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  "vulnStatus": "Modified",
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      "source": "nvd@nist.gov",
      "description": [
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          "lang": "en",
          "value": "CWE-119"
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  "descriptions": [
    {
      "lang": "en",
      "value": "In FreeBSD 12.1-STABLE before r361918, 12.1-RELEASE before p6, 11.4-STABLE before r361919, 11.3-RELEASE before p10, and 11.4-RC2 before p1, an invalid memory location may be used for HID items if the push/pop level is not restored within the processing of that HID item allowing an attacker with physical access to a USB port to be able to use a specially crafted USB device to gain kernel or user-space code execution."
    },
    {
      "lang": "es",
      "value": "En FreeBSD versión 12.1-ESTABLE versiones anteriores a r361918, 12.1-RELEASE versiones anteriores a p6, 11.4-ESTABLE versiones anteriores a r361919, 11.3-RELEASE versiones anteriores a p10 y 11.4-RC2 versiones anteriores a p1, puede ser usada una ubicación de memoria no comprobada para elementos HID si el nivel de inserción/extracción no es restaurado dentro del procesamiento de ese elemento HID, permitiendo que un atacante con acceso físico a un puerto USB pueda usar un dispositivo USB especialmente diseñado para conseguir una ejecución de código de kernel o del espacio de usuario"
    }
  ],
  "lastModified": "2026-06-17T03:24:49.017",
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