CVE-2026-20462: mediatek, inc. mediatek chipset Heap-based Buffer Overflow

Vulnerability summary

CVE-2026-20462 is a medium (CVSS 6.7) Heap-based Buffer Overflow vulnerability in mediatek, inc. mediatek chipset. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 4.7% of scored vulnerabilities.

Timeline

1. 01-07-2026
   PublishedVulnerability first disclosed.
2. 02-07-2026
   Last modifiedVulnerability information updated.

Description

In Telephony, there is a possible memory corruption due to a heap buffer overflow. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS11006447; Issue ID: MSV-7871.

• 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().