#VU117909 Stack-based buffer overflow in MediaTek products - CVE-2025-20747

Vulnerability identifier: #VU117909

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-2025-20747

CWE-ID: CWE-121

Exploitation vector: Local access

Exploit availability: No public exploit available

Vulnerable software:
MT2718
MT2737
MT6835
MT6878
MT6886
MT6897
MT6899
MT6982
MT6985
MT6986
MT6986D
MT6989
MT6990
MT6991
MT8676
MT8678
MT8755
MT8893

Software vendor:
MediaTek

The vulnerability allows a local application to perform service disruption.

The vulnerability exists due to an incorrect bounds check within gnss. A local application can perform service disruption.

Install security update from vendor's website.

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