#VU118889 Reachable Assertion in MediaTek products - CVE-2025-20791

Vulnerability identifier: #VU118889

Vulnerability risk: Low

CVSSv4.0: 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-2025-20791

CWE-ID: CWE-617

Exploitation vector: Local access

Exploit availability: No public exploit available

Vulnerable software:
MT2735
MT6833
MT6833P
MT6855
MT6855T
MT6875T
MT6877T
MT6877TT
MT6880
MT6890
MT8675
MT8771
MT8791
MT8791T
MT6853
MT6853T
MT6873
MT6875
MT6877
MT6883
MT6885
MT6889
MT6891
MT6893
MT8797

Software vendor:
MediaTek

The vulnerability allows a local application to execute arbitrary code.

The vulnerability exists due to incorrect error handling within Modem. A local application can execute arbitrary code.

Install security update from vendor's website.

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