CVE-2026-20524 Memory corruption in MediaTek chipset

High 8.4 Published 5 Oct 2026 Updated 6 Oct 2026

A memory corruption vulnerability in MediaTek chipset firmware allows local attackers to escalate privileges without user interaction.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-20524?

CVE-2026-20524 is a high-severity memory corruption vulnerability in MediaTek, Inc. MediaTek chipset, published on 5 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In apu, there is a possible memory corruption due to improper input validation. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS11249004; Issue ID: MSV-9170.

Weakness: CWE-1285

Which versions are affected by CVE-2026-20524?

It affects 6 products.

Products include Mediatek Mt6899 Firmware, Mediatek Mt6993 Firmware, Mediatek Mt8668 Firmware, Mediatek Mt8781 Firmware, Mediatek Mt8793 Firmware, Mediatek Mt8910 Firmware.

How do I fix CVE-2026-20524?

No fix has been published for CVE-2026-20524 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2026-20524 being exploited?

There is no known exploitation of CVE-2026-20524 in the wild and no public exploit code.

Sources

Also known as GHSA-rwr8-hhc4-v5p9.