CVE-2024-20090

Local privilege escalation via unchecked vdec bounds

Published Oct 7, 2024 · Updated Oct 7, 2024

Out-of-bounds write in MediaTek vdec on affected chipsets running Android 12.0 allows local users with System privileges to escalate access. The vdec component performs a write without the required bounds check, allowing the write to extend outside the intended buffer. Exploitation requires prior System execution privileges, needs no user interaction, and can compromise confidentiality, integrity, and availability.

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 vdec on affected chipsets running Android 12.0 allows local users with System privileges to escalate access. The vdec component performs a write without the required bounds check, allowing the write to extend outside the intended buffer. Exploitation requires prior System execution privileges, needs no user interaction, and can compromise confidentiality, integrity, and availability.

The record

CVE
CVE-2024-20090
Published
Oct 7, 2024
Updated
Oct 7, 2024
Vendor
MediaTek
Product
MT8667
Classifications
CWE-787, T1068
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Oct 7, 2024CVE publishedPublication date reported by the CVE source.
  2. Oct 7, 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 · MT8667version=0 <=*
MediaTek · MT8768version=0 <=*
MediaTek · MT6768version=0 <=*
MediaTek · MediaTek MT6785version=0 <=*
MediaTek · MT8766version=0 <=*
MediaTek · MediaTek MT6765version=0 <=*
MediaTek · MT6885version=0 <=*
MediaTek · MT8666version=0 <=*
MediaTek · MT8385version=0 <=*
MediaTek · MT6873version=0 <=*
MediaTek · MediaTek MT6761version=0 <=*
Google · Androidversion=12.0
MediaTek · MT6853version=0 <=*
MediaTek · MT8781version=0 <=*
MediaTek · MT8789version=0 <=*
MediaTek · MT8788version=0 <=*
MediaTek · MediaTek MT6779version=0 <=*

Published CVSS scores

6.7NIST NVDCVSS: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 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-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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