CVE-2026-20544

Analyzed Analyzed - Analysis Complete

Out of Bounds Write in MediaTek Device Driver

Publication date: 2026-10-05

Last updated on: 2026-10-09

Assigner: MediaTek, Inc.

Description

In meta, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege, if an attacker has physical access to the device, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS11049530 / ALPS11480843; Issue ID: MSV-7935.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-10-05

Last Modified

2026-10-09

Generated

2026-10-19

AI Q&A

2026-10-05

EPSS Evaluated

2026-10-18

NVD

CVE-2026-20544

EUVD

EUVD-2026-92196

Affected Vendors & Products

Vendor	Product	Version / Range
mediatek	mt8910_firmware	*
mediatek	mt6739_firmware	*
mediatek	mt6761_firmware	*
mediatek	mt6765_firmware	*
mediatek	mt6768_firmware	*
mediatek	mt6769_firmware	*
mediatek	mt6781_firmware	*
mediatek	mt6789_firmware	*
mediatek	mt6835_firmware	*
mediatek	mt6853_firmware	*
mediatek	mt6855_firmware	*
mediatek	mt6858_firmware	*
mediatek	mt6877_firmware	*
mediatek	mt6878_firmware	*
mediatek	mt6879_firmware	*
mediatek	mt6881_firmware	*
mediatek	mt6883_firmware	*
mediatek	mt6885_firmware	*
mediatek	mt6886_firmware	*
mediatek	mt6889_firmware	*
mediatek	mt6893_firmware	*
mediatek	mt6895_firmware	*
mediatek	mt6897_firmware	*
mediatek	mt6899_firmware	*
mediatek	mt6983_firmware	*
mediatek	mt6985_firmware	*
mediatek	mt6989_firmware	*
mediatek	mt6991_firmware	*
mediatek	mt6993_firmware	*
mediatek	mt8126_firmware	*
mediatek	mt8171_firmware	*
mediatek	mt8188_firmware	*
mediatek	mt8189_firmware	*
mediatek	mt8195_firmware	*
mediatek	mt8196_firmware	*
mediatek	mt8367_firmware	*
mediatek	mt8370_firmware	*
mediatek	mt8390_firmware	*
mediatek	mt8391_firmware	*
mediatek	mt8668_firmware	*
mediatek	mt8676_firmware	*
mediatek	mt8678_firmware	*
mediatek	mt8755_firmware	*
mediatek	mt8766_firmware	*
mediatek	mt8768_firmware	*
mediatek	mt8775_firmware	*
mediatek	mt8781_firmware	*
mediatek	mt8786_firmware	*
mediatek	mt8788_firmware	*
mediatek	mt8791_firmware	*
mediatek	mt8792_firmware	*
mediatek	mt8793_firmware	*
mediatek	mt8798_firmware	*
mediatek	mt8799_firmware	*
mediatek	mt8863_firmware	*
mediatek	mt8873_firmware	*
mediatek	mt8875_firmware	*
mediatek	mt8883_firmware	*
mediatek	mt8893_firmware	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-787	The product writes data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This vulnerability is a local privilege escalation issue in a device's meta component. It allows an attacker with physical access to write beyond allocated memory due to missing bounds checks. No user interaction or additional privileges are required for exploitation.

Detection Guidance

Detection requires checking for MediaTek chipset devices with outdated firmware. Use system logs to identify devices with meta component issues. Physical inspection may be needed for devices with physical access requirements.

Impact Analysis

If exploited, this vulnerability could allow an attacker to gain higher privileges on your device, potentially enabling them to take control of system functions. Physical access to the device is required for this attack.

Compliance Impact

The provided CVE data does not specify any direct impact on compliance with standards like GDPR or HIPAA. The vulnerability involves a possible out of bounds write due to missing bounds check, which could lead to local privilege escalation with physical access. No user interaction or additional privileges are required for exploitation.

Mitigation Strategies

Apply the patch provided by MediaTek with Patch ID ALPS11049530 or ALPS11480843 to address the missing bounds check issue.

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