CVE-2025-20709: MediaTek Software Development Kit

High severity, CVSS 8.8. EPSS: 0.3% 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 remote (proximal/adjacent) escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00415809; Issue ID: MSV-3405.

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 2025-10-14. Last modified 2026-10-08.