CVE-2026-20454 Race condition in MediaTek chipset

Medium 6.4 Published 1 Jun 2026 Updated 2 Jun 2026

A race condition in MediaTek chipset firmware allows local privilege escalation to System level without user interaction.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2026-20454?

CVE-2026-20454 is a medium-severity vulnerability in MediaTek, Inc. MediaTek chipset, published on 1 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In geniezone, there is a possible out of bounds write due to a race condition. 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: ALPS10873936; Issue ID: MSV-6786.

Weakness: CWE-367

Which versions are affected by CVE-2026-20454?

It affects 36 products.

Products include Mediatek Mt6739 Firmware, Mediatek Mt6761 Firmware, Mediatek Mt6765 Firmware, Mediatek Mt6768 Firmware, Mediatek Mt6781 Firmware, Mediatek Mt6789 Firmware and 30 more.

How do I fix CVE-2026-20454?

Apply the vendor's patch.

Is CVE-2026-20454 being exploited?

There is no known exploitation of CVE-2026-20454 in the wild and no public exploit code.

Sources

Also known as GHSA-fr72-6536-5mwp.