MediaTek AFE OOB Write Enables Local Priv Esc
CVE-2026-20567 Published on November 2, 2026
In afe, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS11431394; Issue ID: MSV-10004.
Weakness Type
What is a Memory Corruption Vulnerability?
The software writes data past the end, or before the beginning, of the intended buffer. Typically, this can result in corruption of data, a crash, or code execution. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent write operation then produces undefined or unexpected results.
CVE-2026-20567 has been classified to as a Memory Corruption vulnerability or weakness.
Affected Versions
MediaTek, Inc. MediaTek chipset:- Version MT6739 is affected.
- Version MT6765 is affected.
- Version MT6768 is affected.
- Version MT6769 is affected.
- Version MT6781 is affected.
- Version MT6789 is affected.
- Version MT6835 is affected.
- Version MT6853 is affected.
- Version MT6855 is affected.
- Version MT6858 is affected.
- Version MT6877 is affected.
- Version MT6878 is affected.
- Version MT6879 is affected.
- Version MT6881 is affected.
- Version MT6883 is affected.
- Version MT6885 is affected.
- Version MT6886 is affected.
- Version MT6889 is affected.
- Version MT6893 is affected.
- Version MT6895 is affected.
- Version MT6897 is affected.
- Version MT6899 is affected.
- Version MT6983 is affected.
- Version MT6985 is affected.
- Version MT6989 is affected.
- Version MT6991 is affected.
- Version MT6993 is affected.
- Version MT8168 is affected.
- Version MT8186 is affected.
- Version MT8188 is affected.
- Version MT8189 is affected.
- Version MT8195 is affected.
- Version MT8196 is affected.
- Version MT8365 is affected.
- Version MT8367 is affected.
- Version MT8390 is affected.
- Version MT8391 is affected.
- Version MT8668 is affected.
- Version MT8678 is affected.
- Version MT8793 is affected.