CVE-2026-20478

MEDIUM

MediaTek Chipset - Out-of-bounds Write

Title source: rule
STIX 2.1

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: ALPS10981454 (Note: For MT6880, MT6890, MT6988, MT6990) / AUTO00851293 (Note: For MT2735, MT2737); Issue ID: MSV-7638.

Scores

CVSS v3 5.5
EPSS 0.0010
EPSS Percentile 1.2%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-787
Status published
Products (6)
MediaTek, Inc./MediaTek chipset MT2735
MediaTek, Inc./MediaTek chipset MT2737
MediaTek, Inc./MediaTek chipset MT6880
MediaTek, Inc./MediaTek chipset MT6890
MediaTek, Inc./MediaTek chipset MT6988
MediaTek, Inc./MediaTek chipset MT6990
Published Aug 03, 2026
Tracked Since Aug 03, 2026