CVE-2026-20484

Analyzed Analyzed - Analysis Complete

Information Disclosure in TFA Due to Missing Permission Check

Publication date: 2026-08-03

Last updated on: 2026-08-19

Assigner: MediaTek, Inc.

Description

In TFA, there is a possible information disclosure due to a missing permission check. This could lead to local information disclosure if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS11053160; Issue ID: MSV-8004.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-08-03

Last Modified

2026-08-19

Generated

2026-08-23

AI Q&A

2026-08-03

EPSS Evaluated

2026-08-22

NVD

CVE-2026-20484

EUVD

EUVD-2026-52075

Affected Vendors & Products

Vendor	Product	Version / Range
mediatek	mt8799_firmware	*
mediatek	mt6739_firmware	*
mediatek	mt6761_firmware	*
mediatek	mt6765_firmware	*
mediatek	mt6768_firmware	*
mediatek	mt6781_firmware	*
mediatek	mt6789_firmware	*
mediatek	mt6833_firmware	*
mediatek	mt6835_firmware	*
mediatek	mt6853_firmware	*
mediatek	mt6855_firmware	*
mediatek	mt6877_firmware	*
mediatek	mt6878_firmware	*
mediatek	mt6879_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	mt6988_firmware	*
mediatek	mt6989_firmware	*
mediatek	mt6991_firmware	*
mediatek	mt6993_firmware	*
mediatek	mt8171_firmware	*
mediatek	mt8188_firmware	*
mediatek	mt8189_firmware	*
mediatek	mt8390_firmware	*
mediatek	mt8391_firmware	*
mediatek	mt8668_firmware	*
mediatek	mt8676_firmware	*
mediatek	mt8678_firmware	*
mediatek	mt8696_firmware	*
mediatek	mt8792_firmware	*
mediatek	mt8793_firmware	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-201	The code transmits data to another actor, but a portion of the data includes sensitive information that should not be accessible to that actor.

Attack-Flow Graph

Executive Summary

This vulnerability in TFA (likely a MediaTek component) allows local information disclosure due to a missing permission check. A malicious actor with System privilege could exploit this to access sensitive data without user interaction.

Detection Guidance

Detection requires checking for missing permission checks in TFA. Review System privilege access logs and verify if unauthorized local information disclosure occurs. No specific commands are provided in the context.

Impact Analysis

If you are a user with System privilege on a device using TFA, an attacker could exploit this to steal local information such as credentials, personal data, or other sensitive details from your device.

Compliance Impact

The provided CVE does not specify direct impacts on GDPR or HIPAA compliance. However, local information disclosure vulnerabilities could potentially lead to unauthorized access to sensitive data, which may violate privacy regulations if exploited.

Mitigation Strategies

Apply the patch identified as ALPS11053160 to address the missing permission check in TFA. Ensure System privilege access is properly restricted to prevent local information disclosure.

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