CVE-2026-20532 Use after free in MediaTek chipset

Medium 6.2 Published 5 Oct 2026 Updated 5 Oct 2026

A double free vulnerability in MediaTek chipset firmware allows local attackers to cause an application crash 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-2026-20532?

CVE-2026-20532 is a medium-severity use after free 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 application crash due to double free. This could lead to local denial of service with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS11249024; Issue ID: MSV-9168.

Weakness: CWE-415

Which versions are affected by CVE-2026-20532?

It affects 5 products.

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

How do I fix CVE-2026-20532?

No fix has been published for CVE-2026-20532 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2026-20532 being exploited?

There is no known exploitation of CVE-2026-20532 in the wild and no public exploit code.

Sources

Also known as GHSA-5fq6-5rjv-rwvv.