#VU123465 Time-of-check Time-of-use (TOCTOU) Race Condition in MediaTek products - CVE-2026-20445

Vulnerability identifier: #VU123465

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-2026-20445

CWE-ID: CWE-367

Exploitation vector: Local access

Exploit availability: No public exploit available

Vulnerable software:
MT6835
MT6855
MT6878
MT6879
MT6886
MT6895
MT6897
MT6899
MT6983
MT6985
MT6989
MT6991
MT6993
MT8188
MT8678
MT8755
MT8771
MT8798
MT6883
MT6885
MT6889
MT6893
MT8797

Software vendor:
MediaTek

The vulnerability allows a local application to perform service disruption.

The vulnerability exists due to a race condition . A local application can perform service disruption.

Install security update from vendor's website.

• https://corp.mediatek.com/product-security-bulletin/March-2026