#VU117912 Stack-based buffer overflow in MediaTek products - CVE-2025-20749

Vulnerability identifier: #VU117912

Vulnerability risk: Low

CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear

CVE-ID: CVE-2025-20749

CWE-ID: CWE-121

Exploitation vector: Local access

Exploit availability: No public exploit available

Vulnerable software:
MT6789
MT6835
MT6855
MT6878
MT6879
MT6886
MT6897
MT6899
MT6983
MT6985
MT6989
MT6991
MT8169
MT8188
MT8195
MT8196
MT8781
MT8796

Software vendor:
MediaTek

The vulnerability allows a local application to perform service disruption.

The vulnerability exists due to a missing bounds check within charger. A local application can perform service disruption.

Install security update from vendor's website.

• https://corp.mediatek.com/product-security-bulletin/November-2025