CVE-2026-20473

Analyzed Analyzed - Analysis Complete

Memory Corruption in MediaTek Display Driver

Publication date: 2026-08-03

Last updated on: 2026-10-23

Assigner: MediaTek, Inc.

Description

In display, there is a possible memory corruption due to use after free. 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: ALPS11019722; Issue ID: MSV-7759.

CVSS Scores

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Meta Information

Published

2026-08-03

Last Modified

2026-10-23

Generated

2026-11-08

AI Q&A

2026-08-03

EPSS Evaluated

2026-11-07

NVD

CVE-2026-20473

EUVD

EUVD-2026-52062

Affected Vendors & Products

Vendor	Product	Version / Range
mediatek	mt6991_firmware	*
mediatek	mt8910_firmware	*
mediatek	mt6993_firmware	*
mediatek	mt8126_firmware	*
mediatek	mt8171_firmware	*
mediatek	mt8188_firmware	*
mediatek	mt8189_firmware	*
mediatek	mt8367_firmware	*
mediatek	mt8668_firmware	*
mediatek	mt8676_firmware	*
mediatek	mt8678_firmware	*
mediatek	mt8766_firmware	*
mediatek	mt8768_firmware	*
mediatek	mt8781_firmware	*
mediatek	mt8786_firmware	*
mediatek	mt8791t_firmware	*
mediatek	mt8799_firmware	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-416	The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Attack-Flow Graph

Executive Summary

This vulnerability is a memory corruption issue caused by a use-after-free condition in the display component. It allows an attacker with System privilege to escalate their privileges locally. Exploitation does not require user interaction.

Detection Guidance

This vulnerability is a use-after-free issue in the display component that requires System privilege to exploit. Detection may involve checking for memory corruption patterns in display-related processes or logs. No specific commands are provided in the context.

Impact Analysis

If exploited, this vulnerability could allow an attacker who already has System privileges to further escalate their access, potentially leading to complete control over the affected system.

Compliance Impact

This vulnerability could lead to local escalation of privilege, potentially allowing unauthorized access to sensitive data. This may impact compliance with standards like GDPR and HIPAA by increasing the risk of data breaches or unauthorized data access.

Mitigation Strategies

Apply the patch identified as ALPS11019722 to address the memory corruption issue. Ensure the System privilege is properly restricted to prevent local escalation of privilege.

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EPSS Chart

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