MediaTek GNSS local OOB write leading to DoS
CVE-2026-20550 Published on November 2, 2026
In gnss, there is a possible out of bounds write due to a missing bounds check. This could lead to local denial of service with no additional execution privileges needed. User interaction is needed for exploitation. Patch ID: ALPS11309816; Issue ID: MSV-10731.
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-2026-20550 has been classified to as a Memory Corruption vulnerability or weakness.
Affected Versions
MediaTek, Inc. MediaTek chipset:- Version MT2735 is affected.
- Version MT2737 is affected.
- Version MT6880 is affected.
- Version MT6890 is affected.
- Version MT6980D is affected.
- Version MT6982 is affected.
- Version MT6986 is affected.
- Version MT6988 is affected.
- Version MT6990 is affected.