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CVE-2021-0639

Status: ModifiedMedium (5.5)—

In multiple functions of libl3oemcrypto.cpp, there is a possible weakness in the existing obfuscation mechanism due to the way sensitive data is handled. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android SoCAndroid ID: A-190724551

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Google — Android

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2021-0639",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
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        "type": "Primary",
        "source": "nvd@nist.gov",
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          "baseScore": 2.1,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:L/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
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        "obtainAllPrivilege": false,
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    "cvssMetricV31": [
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          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
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          "privilegesRequired": "LOW",
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        "exploitabilityScore": 1.8
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  },
  "affected": [
    {
      "source": "security@android.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "Android",
          "versions": [
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  "published": "2021-08-17T19:15:07.807",
  "references": [
    {
      "url": "https://source.android.com/security/bulletin/2021-08-01",
      "tags": [
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      "source": "security@android.com"
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    {
      "url": "https://source.android.com/security/bulletin/2021-08-01",
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Modified",
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      "description": [
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          "value": "CWE-922"
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      "value": "In multiple functions of libl3oemcrypto.cpp, there is a possible weakness in the existing obfuscation mechanism due to the way sensitive data is handled. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android SoCAndroid ID: A-190724551"
    },
    {
      "lang": "es",
      "value": "En múltiples funciones del archivo libl3oemcrypto.cpp, se presenta una posible debilidad en el mecanismo de ofuscación existente debido a la manera en que se manejan los datos confidenciales. Esto podría conllevar a una divulgación de información local sin ser necesarios privilegios de ejecución adicionales. No es requerida una interacción del usuario para su explotación. Producto: Android, Versiones: Android SoC, ID de Android: A-190724551"
    }
  ],
  "lastModified": "2026-06-17T03:30:27.467",
  "configurations": [
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}