Out-of-bounds write in MediaTek products - CVE-2026-20428
Published: March 3, 2026
Vulnerability identifier: #VU123450
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-2026-20428
CWE-ID: CWE-787
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 missing bounds check . A local application can execute arbitrary code.
Affected software
MT6885
MT6893
MT6889
MT6883
MT6877
MT6853
MT6781
MT8793
MT8678
MT8196
MT6993
MT6991
MT6989
MT6985
MT6983
MT6899
MT6897
MT6895
MT6886
MT6739
MT6879
MT6878
MT6855
MT6835
MT6833
MT6789
MT6768
MT6765
MT6761
MT6893
MT6889
MT6883
MT6877
MT6853
MT6781
MT8793
MT8678
MT8196
MT6993
MT6991
MT6989
MT6985
MT6983
MT6899
MT6897
MT6895
MT6886
MT6739
MT6879
MT6878
MT6855
MT6835
MT6833
MT6789
MT6768
MT6765
MT6761
How to mitigate CVE-2026-20428
Install security update from vendor's website.