CVE-2026-20509: Mediatek, Inc MediaTek Chipset

Medium severity, CVSS 6.7. EPSS: 0.1% chance of exploitation in the next 30 days.

In Power HAL, there is a possible out of bounds write due to a missing 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: ALPS11165543; Issue ID: MSV-9011.

Affected products

• Mediatek, Inc MediaTek Chipset

Published 2026-09-07. Last modified 2026-09-08.