CVE-2025-20739: MediaTek Software Development Kit

Medium severity, CVSS 6.7. EPSS: 0.2% chance of exploitation in the next 30 days.

In wlan AP driver, there is a possible out of bounds write due to an incorrect 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: WCNCR00435340; Issue ID: MSV-4038.

Affected products

• MediaTek Software Development Kit: up to and including 7.6.7.2
• Openwrt Openwrt: version 19.07.0 only; version 21.02.0 only

Published 2025-11-04. Last modified 2026-06-17.