MediaTek WLAN STA Driver Privilege Escalation via Bounds Check
CVE-2026-20407 Published on February 2, 2026
In wlan STA driver, there is a possible escalation of privilege due to a missing bounds check. This could lead to local escalation of privilege with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00464377; Issue ID: MSV-4905.
Vulnerability Analysis
CVE-2026-20407 can be exploited with local system access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.
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-2026-20407 has been classified to as a Memory Corruption vulnerability or weakness.
Products Associated with CVE-2026-20407
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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.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.