CVE-2026-20480

Analyzed Analyzed - Analysis Complete

Audio HAL Heap Buffer Overflow Vulnerability

Publication date: 2026-08-03

Last updated on: 2026-08-19

Assigner: MediaTek, Inc.

Description

In Audio HAL, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local denial of service with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS10960023 (Note: For MT6880, MT6890, MT6980D, MT6988, MT6990) / AUTO00851189 (Note: For MT2735, MT3737); Issue ID: MSV-7586.

CVSS Scores

EPSS Scores

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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-2026-20480

EUVD

EUVD-2026-52069

Affected Vendors & Products

Vendor	Product	Version / Range
mediatek	mt6880_firmware	*
mediatek	mt2735_firmware	*
mediatek	mt2737_firmware	*
mediatek	mt6890_firmware	*
mediatek	mt6980d_firmware	*
mediatek	mt6988_firmware	*
mediatek	mt6990_firmware	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-122	A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

Attack-Flow Graph

Executive Summary

This is a heap buffer overflow in the Audio HAL (Hardware Abstraction Layer) that could lead to an out of bounds write. It requires local access with user execution privileges but does not need user interaction to exploit. The issue could cause a denial of service locally.

Detection Guidance

The provided CVE data does not include specific detection methods or commands for identifying this vulnerability on a network or system. The description mentions a heap buffer overflow in Audio HAL but lacks technical details required for detection.

Impact Analysis

If exploited, this vulnerability could allow an attacker with local access to cause a denial of service on your device. This might result in temporary loss of audio functionality or system instability.

Compliance Impact

This vulnerability does not directly affect compliance with GDPR, HIPAA, or similar standards as it involves a local denial of service in Audio HAL with user execution privileges. No evidence suggests data exposure or privacy violations typical of GDPR/HIPAA non-compliance.

Mitigation Strategies

Apply the provided patches (ALPS10960023 for MT6880, MT6890, MT6980D, MT6988, MT6990 or AUTO00851189 for MT2735, MT3737) to fix the heap buffer overflow in Audio HAL.

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