CVE-2026-20423: MediaTek Nbiot SDK

High severity, CVSS 7.8. EPSS: 0.1% chance of exploitation in the next 30 days.

In wlan STA driver, there is a possible out of bounds write 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: WCNCR00465314; Issue ID: MSV-4956.

Affected products

• MediaTek Nbiot SDK: up to and including 3.8

Published 2026-03-02. Last modified 2026-06-17.