CVE-2026-20480: mediatek, inc. mediatek chipset Heap-based Buffer Overflow

Vulnerability summary

CVE-2026-20480 is a medium (CVSS 5.5) Heap-based Buffer Overflow vulnerability in mediatek, inc. mediatek chipset. EPSS estimates a 0.14% chance of exploitation in the next 30 days, higher than 3.3% of scored vulnerabilities.

Timeline

1. 03-08-2026
   PublishedVulnerability first disclosed.
2. 03-08-2026
   Last modifiedVulnerability information updated.

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.

• CWE-122Heap-based Buffer OverflowA 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().