CVE-2024-20105

Local privilege escalation via unchecked m4u write

Published Jan 6, 2025 · Updated Feb 26, 2026

Out-of-bounds write in MediaTek m4u on Android 12.0 through 15.0 allows local users with System privilege to escalate privileges. The m4u component omits a bounds check before writing, allowing data to be written outside its intended boundary. Exploitation requires prior System privilege and no user interaction; successful exploitation grants higher local privileges.

CVSS severity6.7
Medium
EPSS probability0.09%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in MediaTek m4u on Android 12.0 through 15.0 allows local users with System privilege to escalate privileges. The m4u component omits a bounds check before writing, allowing data to be written outside its intended boundary. Exploitation requires prior System privilege and no user interaction; successful exploitation grants higher local privileges.

The record

CVE
CVE-2024-20105
Published
Jan 6, 2025
Updated
Feb 26, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1404
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jan 6, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.7CISA-ADPCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1404Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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