Heap-based Buffer Overflow in MediaTek products - CVE-2026-20408
Published: February 2, 2026
Vulnerability identifier: #VU122194
CSH Severity: Low
CVSS v4.0: 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/E:U/U:Clear
CVE-ID: CVE-2026-20408
CWE-ID: CWE-122
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: MediaTek
Affected software:
MT6890
MT7615
MT7915
MT7916
MT7981
MT7986
MT6890
MT7615
MT7915
MT7916
MT7981
MT7986
Detailed vulnerability description
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.
How to mitigate CVE-2026-20408
Install security update from vendor's website.