Main Vulnerability Database Vulnerabilities #VU122186

Out-of-bounds write in MediaTek products - CVE-2026-20402

Published: February 2, 2026

Vulnerability identifier: #VU122186

CSH Severity: Low

CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-20402

CWE-ID: CWE-787

Exploitation vector: Local access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local application to execute arbitrary code.

The vulnerability exists due to improper input validation in modem subcomponent. A local application can execute arbitrary code.

MT6885
MT8797
MT6893
MT6891
MT6889
MT6883
MT6877
MT6875
MT6873
MT6853
MT8791T
MT8791
MT8771
MT8675
MT6890
MT2735
MT6880
MT6855
MT6833
Google Android

Install security update from vendor's website.

Google Android - addressed in versions 14 2026-03-05, 15 2026-03-05, 16-qpr2 2026-03-05, 16 2026-03-05