Main Vulnerability Database Vulnerabilities #VU122194

Heap-based Buffer Overflow in MediaTek products - CVE-2026-20408

Published: February 2, 2026

Vulnerability identifier: #VU122194

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-2026-20408

CWE-ID: CWE-122

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 a heap buffer overflow in wlan subcomponent. A local application can execute arbitrary code.

MT6890
MT7615
MT7915
MT7916
MT7981
MT7986

Install security update from vendor's website.