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CVE-2020-26186

Estado: ModificadaMedia (6.8)—

Dell Inspiron 5675 BIOS versions prior to 1.4.1 contain a UEFI BIOS RuntimeServices overwrite vulnerability. A local attacker with access to system memory may exploit this vulnerability by overwriting the RuntimeServices 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).

Tecnologías afectadas (1)

Dell — Inspiron 5675 Firmware

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2020-26186",
  "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"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
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          "version": "3.1",
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          "attackVector": "PHYSICAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
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          "privilegesRequired": "NONE",
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  "affected": [
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      "affectedData": [
        {
          "vendor": "Dell",
          "product": "CPG BIOS",
          "versions": [
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              "status": "affected",
              "version": "unspecified",
              "lessThan": "1.4.1",
              "versionType": "custom"
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  ],
  "published": "2021-01-08T19:15:14.320",
  "references": [
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      "url": "https://www.dell.com/support/kbdoc/en-us/000180645/dsa-2020-247-dell-client-platform-security-update-for-uefi-bios-runtimeservices-overwrite-vulnerability",
      "tags": [
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    },
    {
      "url": "https://www.dell.com/support/kbdoc/en-us/000180645/dsa-2020-247-dell-client-platform-security-update-for-uefi-bios-runtimeservices-overwrite-vulnerability",
      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
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      "source": "security_alert@emc.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-642"
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    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-668"
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      ]
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Dell Inspiron 5675 BIOS versions prior to 1.4.1 contain a UEFI BIOS RuntimeServices overwrite vulnerability. A local attacker with access to system memory may exploit this vulnerability by overwriting the RuntimeServices structure to execute arbitrary code in System Management Mode (SMM)."
    },
    {
      "lang": "es",
      "value": "Dell Inspiron 5675 BIOS versiones anteriores a 1.4.1, contienen una vulnerabilidad de sobrescritura de UEFI BIOS RuntimeServices. Un atacante local con acceso a una memoria del sistema puede explotar esta vulnerabilidad al sobrescribir la estructura de RuntimeServices para ejecutar código arbitrario en System Management Mode (SMM)"
    }
  ],
  "lastModified": "2026-06-17T03:07:47.850",
  "configurations": [
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  "sourceIdentifier": "security_alert@emc.com"
}