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CVE-2023-21401

Status: ModifiedCritical (9.8)—

In DevmemIntChangeSparse of devicemem_server.c, there is a possible out of bounds write due to an integer overflow. This could lead to local escalation of privilege in the kernel with no additional execution privileges needed. User interaction is not needed for exploitation.

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-2023-21401",
  "cveTags": [],
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          "version": "2.0.3",
          "timestamp": "2024-12-02T17:34:28.492983Z"
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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          "userInteraction": "NONE",
          "attackComplexity": "LOW",
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  "published": "2023-12-04T23:15:22.970",
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    },
    {
      "lang": "es",
      "value": "Hay elevación de privilegios."
    }
  ],
  "lastModified": "2026-06-17T05:32:30.937",
  "configurations": [
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  "sourceIdentifier": "security@android.com"
}