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CVE-2020-5378

Estado: ModificadaMedia (6.8)—

Dell G7 17 7790 BIOS versions prior to 1.13.2 contain a UEFI BIOS Boot Services overwrite vulnerability. A local attacker with access to system memory may exploit this vulnerability by overwriting the EFI_BOOT_SERVICES structure to execute arbitrary code in System Management Mode (SMM).

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.

Fuente: mapeo oficial MITRE CTID (CVE → ATT&CK).

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Privileged Account ManagementBoot IntegrityUpdate Software

Tecnologías afectadas (1)

Dell — G7 17 7790 Bios

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2020-5378",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.2,
          "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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        "acInsufInfo": false,
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        "obtainAllPrivilege": false,
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  "affected": [
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      "affectedData": [
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          "vendor": "Dell",
          "product": "CPG BIOS",
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              "status": "affected",
              "version": "unspecified",
              "lessThan": "1.13.0",
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  "published": "2020-09-02T21:15:12.860",
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      "tags": [
        "Vendor Advisory"
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      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
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          "lang": "en",
          "value": "CWE-416"
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      "source": "nvd@nist.gov",
      "description": [
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  "descriptions": [
    {
      "lang": "en",
      "value": "Dell G7 17 7790 BIOS versions prior to 1.13.2 contain a UEFI BIOS Boot Services overwrite vulnerability. A local attacker with access to system memory may exploit this vulnerability by overwriting the EFI_BOOT_SERVICES structure to execute arbitrary code in System Management Mode (SMM)."
    },
    {
      "lang": "es",
      "value": "El BIOS de Dell G7 17 7790 versiones anteriores a 1.13.2 contienen una vulnerabilidad de sobrescritura de UEFI BIOS Boot Services. Un atacante local con acceso a la memoria del sistema puede aprovechar esta vulnerabilidad al sobrescribir la estructura de EFI_BOOT_SERVICES para ejecutar código arbitrario en System Management Mode (SMM)"
    }
  ],
  "lastModified": "2026-06-17T03:21:22.950",
  "configurations": [
    {
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