CVE-2025-20633 Memory corruption in MT7603, MT7615, MT7622, MT7915

High 8.8 Published 3 Feb 2025 Updated 18 Mar 2025

A remote attacker can execute arbitrary code on MediaTek Wi-Fi devices via an out-of-bounds write in the AP driver 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-2025-20633?

CVE-2025-20633 is a high-severity memory corruption vulnerability in Mediatek Software Development Kit, published on 3 Feb 2025. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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) code execution with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00400889; Issue ID: MSV-2491.

Weakness: CWE-787

Which versions are affected by CVE-2025-20633?

It affects 1 product.

Products include Mediatek Software Development Kit.

How do I fix CVE-2025-20633?

No fix has been published for CVE-2025-20633 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-2025-20633 being exploited?

There is no known exploitation of CVE-2025-20633 in the wild and no public exploit code.

All Mediatek Software Development Kit vulnerabilities

Sources

Also known as GHSA-278j-w8wp-h5g9.