CVE-2026-20478: MediaTek MT2735 Firmware

Medium severity, CVSS 5.5. EPSS: 0.1% chance of exploitation in the next 30 days.

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.

Affected products

• MediaTek MT2735 Firmware: affected versions not specified
• MediaTek MT2737 Firmware: affected versions not specified
• MediaTek MT6880 Firmware: affected versions not specified
• MediaTek MT6890 Firmware: affected versions not specified
• MediaTek MT6988 Firmware: affected versions not specified
• MediaTek MT6990 Firmware: affected versions not specified

Published 2026-08-03. Last modified 2026-08-20.