CVE-2026-20530

Analyzed Analyzed - Analysis Complete

Out of Bounds Write in MediaTek Display Driver

Publication date: 2026-10-05

Last updated on: 2026-10-09

Assigner: MediaTek, Inc.

Description

In display, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS11292777; Issue ID: MSV-9195.

CVSS Scores

EPSS Scores

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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-2026-20530

EUVD

EUVD-2026-92193

Affected Vendors & Products

Vendor	Product	Version / Range
mediatek	mt2718_firmware	*
mediatek	mt6991_firmware	*
mediatek	mt6993_firmware	*
mediatek	mt8126_firmware	*
mediatek	mt8171_firmware	*
mediatek	mt8188_firmware	*
mediatek	mt8189_firmware	*
mediatek	mt8196_firmware	*
mediatek	mt8668_firmware	*
mediatek	mt8678_firmware	*
mediatek	mt8793_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 an out of bounds write issue in the display component. It occurs because there is a missing bounds check, which could allow an attacker to write data beyond the intended memory area. Exploitation requires the attacker to already have System privilege access.

Detection Guidance

The provided CVE data does not include specific detection methods or commands for identifying this vulnerability on a system or network. Detection would typically require vendor-specific tools or manual inspection of MediaTek chipset firmware and display components.

Impact Analysis

If exploited, this vulnerability could allow a malicious actor with System privilege to escalate their privileges locally. This means they could gain more control over the system than intended, potentially leading to unauthorized access or actions.

Compliance Impact

The vulnerability involves a potential out of bounds write due to missing bounds checks, which could lead to local privilege escalation if an attacker already has System privilege. This type of vulnerability may impact compliance with standards like GDPR or HIPAA by potentially allowing unauthorized access or data breaches, though specific compliance impacts depend on system configuration and data handling practices.

Mitigation Strategies

Apply the patch identified as ALPS11292777 or Issue ID MSV-9195 to address the missing bounds check in the display component. Since exploitation requires System privilege, ensure proper access controls are in place to prevent unauthorized privilege escalation.

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