CVE-2024-20029

Local privilege escalation via WLAN buffer overwrite

Published Mar 4, 2024 · Updated Aug 15, 2024

Out-of-bounds write in MediaTek WLAN firmware on Android 13.0 and 14.0 allows local users to escalate execution privileges. The firmware fails to validate an undisclosed WLAN input before writing outside its intended buffer; MediaTek has not named the routine or input field. Exploitation requires existing System execution privileges, needs no user interaction, and can corrupt firmware memory during privilege escalation.

CVSS severity8.4
High
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 WLAN firmware on Android 13.0 and 14.0 allows local users to escalate execution privileges. The firmware fails to validate an undisclosed WLAN input before writing outside its intended buffer; MediaTek has not named the routine or input field. Exploitation requires existing System execution privileges, needs no user interaction, and can corrupt firmware memory during privilege escalation.

The record

CVE
CVE-2024-20029
Published
Mar 4, 2024
Updated
Aug 15, 2024
Vendor
MediaTek
Product
MT8796
Classifications
CWE-20, CWE-787, T1068
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Mar 4, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=*

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

MediaTek · MT8796version=0 <=*
MediaTek · MediaTek MT8678version=0 <=*
Google · Androidversion=13.0; version=14.0
MediaTek · MT6985version=0 <=*
MediaTek · MT6989version=0 <=*

Published CVSS scores

8.4CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
CWE-787Out-of-bounds Write
T1068Exploitation 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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