#VU122184 Out-of-bounds read in MediaTek products - CVE-2026-20420
Published: February 2, 2026
Vulnerability identifier: #VU122184
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-20420
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
MT2735
MT2737
MT6813
MT6815
MT6833
MT6835
MT6855
MT6858
MT6878
MT6879
MT6880
MT6886
MT6890
MT6895
MT6896
MT6897
MT6899
MT6980
MT6983
MT6985
MT6986
MT6989
MT6990
MT6991
MT6993
MT8676
MT8791
MT6853
MT6873
MT6875
MT6877
MT6883
MT6885
MT6889
MT6891
MT6893
MT2735
MT2737
MT6813
MT6815
MT6833
MT6835
MT6855
MT6858
MT6878
MT6879
MT6880
MT6886
MT6890
MT6895
MT6896
MT6897
MT6899
MT6980
MT6983
MT6985
MT6986
MT6989
MT6990
MT6991
MT6993
MT8676
MT8791
MT6853
MT6873
MT6875
MT6877
MT6883
MT6885
MT6889
MT6891
MT6893
Software vendor:
MediaTek
MediaTek
Description
The vulnerability allows a local application to perform a denial of service attack.
The vulnerability exists due to incorrect error handling in modem subcomponent. A local application can perform a denial of service attack.
Remediation
Install security update from vendor's website.