Time-of-check Time-of-use (TOCTOU) Race Condition in MediaTek products - CVE-2026-20445
Published: March 3, 2026
Vulnerability identifier: #VU123465
CSH Severity: Low
CVSS v4.0: 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
Vendor: MediaTek
Affected software:
MT6835
MT6855
MT6878
MT6879
MT6886
MT6895
MT6897
MT6899
MT6983
MT6985
MT6989
MT6991
MT6993
MT8188
MT8678
MT8755
MT8771
MT8798
MT6883
MT6885
MT6889
MT6893
MT8797
MT6835
MT6855
MT6878
MT6879
MT6886
MT6895
MT6897
MT6899
MT6983
MT6985
MT6989
MT6991
MT6993
MT8188
MT8678
MT8755
MT8771
MT8798
MT6883
MT6885
MT6889
MT6893
MT8797
Detailed vulnerability description
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.
How to mitigate CVE-2026-20445
Install security update from vendor's website.