CVE-2025-20766

Local privilege escalation via uninitialized display variable

Published Dec 2, 2025 · Updated Dec 2, 2025

Memory corruption in the MediaTek display driver on Android 14.0, 15.0, and 16.0 allows local users with System privilege to elevate privileges. The display component uses an uninitialized variable while processing improperly validated input, corrupting memory. Exploitation requires prior System privilege and no user interaction; MediaTek has not disclosed the affected function or input path.

CVSS severity7.8
High
EPSS probability0.08%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory corruption in the MediaTek display driver on Android 14.0, 15.0, and 16.0 allows local users with System privilege to elevate privileges. The display component uses an uninitialized variable while processing improperly validated input, corrupting memory. Exploitation requires prior System privilege and no user interaction; MediaTek has not disclosed the affected function or input path.

The record

CVE
CVE-2025-20766
Published
Dec 2, 2025
Updated
Dec 2, 2025
Vendor
MediaTek
Product
MediaTek Display Driver
Classifications
CWE-457, T1068
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Dec 2, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 2, 2025Record 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=Android 14.0, 15.0, 16.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

MediaTek · MediaTek Display Driverversion=Android 14.0, 15.0, 16.0

Published CVSS scores

7.8CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/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-457Use of Uninitialized Variable
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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