Mediatek WLAN STA Driver: Bounds Overflow Crash for Local DoS
CVE-2026-20456 Published on June 1, 2026
In wlan STA driver, there is a possible system crash due to a missing bounds check. This could lead to local denial of service with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00480851; Issue ID: MSV-6338.
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-2026-20456 has been classified to as a Memory Corruption vulnerability or weakness.
Affected Versions
MediaTek, Inc. MediaTek chipset:- Version MT7902 is affected.
- Version MT7920 is affected.
- Version MT7921 is affected.
- Version MT7922 is affected.
- Version MT7925 is affected.
- Version MT7927 is affected.