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CVE-2020-25082

Estado: ModificadaBaja (3.8)—

An attacker with physical access to Nuvoton Trusted Platform Module (NPCT75x 7.2.x before 7.2.2.0) could extract an Elliptic Curve Cryptography (ECC) private key via a side-channel attack against ECDSA, because of an Observable Timing Discrepancy.

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)

Nuvoton — Npct75x Firmware

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2020-25082",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 1.9,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:M/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.4,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
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    "cvssMetricV31": [
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        "type": "Secondary",
        "source": "cve@mitre.org",
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          "version": "3.1",
          "baseScore": 3.8,
          "attackVector": "PHYSICAL",
          "baseSeverity": "LOW",
          "vectorString": "CVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
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          "attackComplexity": "HIGH",
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  "affected": [
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      "affectedData": [
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          "versions": [
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  "published": "2021-08-10T17:15:07.087",
  "references": [
    {
      "url": "https://www.nuvoton.com/support/product-related-information/security-advisories/sa-002/",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://www.nuvoton.com/support/product-related-information/security-advisories/sa-002/",
      "tags": [
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      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-203"
        }
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An attacker with physical access to Nuvoton Trusted Platform Module (NPCT75x 7.2.x before 7.2.2.0) could extract an Elliptic Curve Cryptography (ECC) private key via a side-channel attack against ECDSA, because of an Observable Timing Discrepancy."
    },
    {
      "lang": "es",
      "value": "Un atacante con acceso físico a Nuvoton Trusted Platform Module (NPCT75x versiones 7.2.x anteriores a 7.2.2.0) podría extraer una clave privada de Elliptic Curve Cryptography (ECC) por medio de un ataque de canal lateral contra ECDSA, debido a una Discrepancia de Tiempo Observable"
    }
  ],
  "lastModified": "2026-06-17T03:06:21.030",
  "configurations": [
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