CVE-2026-20478

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.

CVSS 3.1

5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS

0.1% chance of exploitation in the next 30 days; higher than 3% of CVEs (scores of 2026-10-25)

CWE

CWE-787

Published

2026-08-03

Modified

2026-10-23

Record from

the NVD, synced 2026-10-24

Affected

• mediatek:mt2735_firmware
• mediatek:mt2737_firmware
• mediatek:mt6880_firmware
• mediatek:mt6890_firmware
• mediatek:mt6988_firmware
• mediatek:mt6990_firmware

References

• https://www.mediatek.com/product-security-bulletin/August-2026

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