CVE-2026-20467 Privilege escalation in MediaTek chipset
A missing bounds check in MediaTek apusys allows local privilege escalation for attackers with System privileges.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-20467?
CVE-2026-20467 is a medium-severity vulnerability in MediaTek, Inc. MediaTek chipset, published on 3 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In apusys, there is a possible escalation of privilege due to a missing bounds check. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: AUTO00837766; Issue ID: MSV-6767.
Weakness: CWE-749
Which versions are affected by CVE-2026-20467?
How do I fix CVE-2026-20467?
Apply the vendor's patch.
Is CVE-2026-20467 being exploited?
There is no known exploitation of CVE-2026-20467 in the wild and no public exploit code.
Sources
Also known as A-518564544, ASB-A-518564544, GHSA-629p-7h2h-8hf5, M-AUTO00837766.