CVE-2025-20631 Memory corruption in MT7615, MT7622, MT7663, MT7915, MT7916, MT7981, MT7986

High 7.8 Published 3 Feb 2025 Updated 19 Mar 2025

A local attacker can exploit an out-of-bounds write in the MediaTek Wi-Fi AP driver to escalate privileges without user interaction.

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

What is CVE-2025-20631?

CVE-2025-20631 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 local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00397141; Issue ID: MSV-2187.

Weakness: CWE-787

Which versions are affected by CVE-2025-20631?

It affects 1 product.

Products include Mediatek Software Development Kit.

How do I fix CVE-2025-20631?

No fix has been published for CVE-2025-20631 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-2025-20631 being exploited?

There is no known exploitation of CVE-2025-20631 in the wild and no public exploit code.

All Mediatek Software Development Kit vulnerabilities

Sources

Also known as GHSA-62xx-m2m9-h236.