CVE-2026-20513

Audio HAL Improper Input Validation Leads to Local Information Disclosure

Published Sep 7, 2026 CVSS 3.1 · 4.4 Medium EPSS < 1% KEV · Not listed

Description

In Audio HAL, there is a possible information disclosure due to improper input validation. 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: ALPS11087533; Issue ID: MSV-8245.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

MediaTek, Inc.

MediaTek chipset

unaffected

Version	Status	Constraints
`MT2718`	affected	—
`MT6769`	affected	—
`MT6781`	affected	—
`MT6789`	affected	—
`MT6833`	affected	—
`MT6835`	affected	—
`MT6853`	affected	—
`MT6855`	affected	—
`MT6858`	affected	—
`MT6877`	affected	—
`MT6878`	affected	—
`MT6881`	affected	—
`MT6886`	affected	—
`MT6893`	affected	—
`MT6895`	affected	—
`MT6897`	affected	—
`MT6899`	affected	—
`MT6989`	affected	—
`MT6991`	affected	—
`MT6993`	affected	—
`MT8126`	affected	—
`MT8168`	affected	—
`MT8171`	affected	—
`MT8186`	affected	—
`MT8188`	affected	—
`MT8189`	affected	—
`MT8195`	affected	—
`MT8196`	affected	—
`MT8321`	affected	—
`MT8365`	affected	—
`MT8367`	affected	—
`MT8385`	affected	—
`MT8390`	affected	—
`MT8391`	affected	—
`MT8668`	affected	—
`MT8676`	affected	—
`MT8678`	affected	—
`MT8696`	affected	—
`MT8755`	affected	—
`MT8766`	affected	—
`MT8768`	affected	—
`MT8771`	affected	—
`MT8775`	affected	—
`MT8781`	affected	—
`MT8786`	affected	—
`MT8788E`	affected	—
`MT8791T`	affected	—
`MT8792`	affected	—
`MT8793`	affected	—
`MT8796`	affected	—
`MT8797`	affected	—
`MT8798`	affected	—
`MT8799`	affected	—
`MT8873`	affected	—
`MT8883`	affected	—
`MT8893`	affected	—
`MT8910`	affected	—

No data.

Vendor Product Versions

Mediatek, Inc.

Mediatek Chipset

Version	Status	Scheme	Platform
`MT2718`	affected	generic	—
`MT6769`	affected	generic	—
`MT6781`	affected	generic	—
`MT6789`	affected	generic	—
`MT6833`	affected	generic	—
`MT6835`	affected	generic	—
`MT6853`	affected	generic	—
`MT6855`	affected	generic	—
`MT6858`	affected	generic	—
`MT6877`	affected	generic	—
`MT6878`	affected	generic	—
`MT6881`	affected	generic	—
`MT6886`	affected	generic	—
`MT6893`	affected	generic	—
`MT6895`	affected	generic	—
`MT6897`	affected	generic	—
`MT6899`	affected	generic	—
`MT6989`	affected	generic	—
`MT6991`	affected	generic	—
`MT6993`	affected	generic	—
`MT8126`	affected	generic	—
`MT8168`	affected	generic	—
`MT8171`	affected	generic	—
`MT8186`	affected	generic	—
`MT8188`	affected	generic	—
`MT8189`	affected	generic	—
`MT8195`	affected	generic	—
`MT8196`	affected	generic	—
`MT8321`	affected	generic	—
`MT8365`	affected	generic	—
`MT8367`	affected	generic	—
`MT8385`	affected	generic	—
`MT8390`	affected	generic	—
`MT8391`	affected	generic	—
`MT8668`	affected	generic	—
`MT8676`	affected	generic	—
`MT8678`	affected	generic	—
`MT8696`	affected	generic	—
`MT8755`	affected	generic	—
`MT8766`	affected	generic	—
`MT8768`	affected	generic	—
`MT8771`	affected	generic	—
`MT8775`	affected	generic	—
`MT8781`	affected	generic	—
`MT8786`	affected	generic	—
`MT8788E`	affected	generic	—
`MT8791T`	affected	generic	—
`MT8792`	affected	generic	—
`MT8793`	affected	generic	—
`MT8796`	affected	generic	—
`MT8797`	affected	generic	—
`MT8798`	affected	generic	—
`MT8799`	affected	generic	—
`MT8873`	affected	generic	—
`MT8883`	affected	generic	—
`MT8893`	affected	generic	—
`MT8910`	affected	generic	—

Remediation

No solution or workaround provided in the CVE record

Tracking

Advisories

No advisories available

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required High

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.237% probability within 30 days)

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://www.mediatek.com/product-security-bulletin/September-2026

History

Sep 7, 2026 1:45 PM Title updated View changes

Type	Values Removed	Values Added
Title		Audio HAL Improper Input Validation Leads to Local Information Disclosure

Sep 7, 2026 11:30 AM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		cvssV3_1 `{'score': 4.4, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N'}` ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Sep 7, 2026 4:00 AM First appearance in the feed. Affected vendors updated View changes

Type	Values Removed	Values Added
First Time appeared		Mediatek, Inc. Mediatek, Inc. mediatek Chipset
Vendors & Products		Mediatek, Inc. Mediatek, Inc. mediatek Chipset

Sep 7, 2026 2:00 AM Description updated. Weaknesses updated. Added references View changes

Type	Values Removed	Values Added
Description		In Audio HAL, there is a possible information disclosure due to improper input validation. 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: ALPS11087533; Issue ID: MSV-8245.
Weaknesses		CWE-35
References		https://www.mediatek.com/product-security-bulletin/September-2026