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CVE-2020-0407

Status: ModifiedMedium (4.4)—

In various functions in fscrypt_ice.c and related files in some implementations of f2fs encryption that use encryption hardware which only supports 32-bit IVs (Initialization Vectors), 64-bit IVs are used and later are truncated to 32 bits. This may cause IV reuse and thus weakened disk encryption. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-153450752References: N/A

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-2020-0407",
  "cveTags": [],
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          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:L/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
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        "acInsufInfo": false,
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        "obtainAllPrivilege": false,
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          "versions": [
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  "published": "2020-09-17T16:15:14.117",
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    {
      "url": "https://source.android.com/security/bulletin/2020-09-01",
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      "value": "In various functions in fscrypt_ice.c and related files in some implementations of f2fs encryption that use encryption hardware which only supports 32-bit IVs (Initialization Vectors), 64-bit IVs are used and later are truncated to 32 bits. This may cause IV reuse and thus weakened disk encryption. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-153450752References: N/A"
    },
    {
      "lang": "es",
      "value": "En varias funciones en el archivo fscrypt_ice.c y archivos relacionados en algunas implementaciones de cifrado f2fs que utilizan hardware de cifrado que solo admite IV de 32 bits (Initialization Vectors), IV de 64 bits son usados y luego se truncan a 32 bits. Esto puede causar la reutilización de IV y, por tanto, debilitar el cifrado del disco. Esto podría conllevar a una divulgación de información local con los privilegios de ejecución System necesarios. No es requerida una interacción del usuario para su explotación. Producto: Android, Versiones: Kernel de Android, ID de Android: A-153450752, Referencias: N/A"
    }
  ],
  "lastModified": "2026-06-17T02:45:47.307",
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