CVE-2025-20680 Memory corruption in MT7902, MT7920, MT7921, MT7922, MT7925, MT7927

Critical 9.8 Published 8 Jul 2025 Updated 26 Feb 2026

A local attacker can escalate privileges via an out-of-bounds write in the MediaTek Bluetooth driver, requiring user execution privileges but no interaction.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-20680?

CVE-2025-20680 is a critical memory corruption vulnerability in MediaTek, Inc. MT7902, MT7920, MT7921, MT7922, MT7925, MT7927, published on 8 Jul 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In Bluetooth driver, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local escalation of privilege with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00418044; Issue ID: MSV-3482.

Weakness: CWE-122

Which versions are affected by CVE-2025-20680?

It affects 1 product.

Products include Mediatek Nbiot Sdk.

How do I fix CVE-2025-20680?

No fix has been published for CVE-2025-20680 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-2025-20680 being exploited?

There is no known exploitation of CVE-2025-20680 in the wild and no public exploit code.

Sources

Also known as GHSA-8744-rghf-gq4r.