CVE-2026-20469 Privilege escalation in MediaTek chipset
Local attackers with System privileges can escalate privileges via improper input validation in trusted_mem on MediaTek chipsets.
- 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-2026-20469?
CVE-2026-20469 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 trusted_mem, there is a possible escalation of privilege due to improper input validation. This could lead to local escalation of privilege if a malicious actor has already obtained the System privilege. User interaction is needed for exploitation. Patch ID: AUTO00834868; Issue ID: MSV-6533.
Weakness: CWE-123
Which versions are affected by CVE-2026-20469?
How do I fix CVE-2026-20469?
Apply the vendor's patch.
Is CVE-2026-20469 being exploited?
There is no known exploitation of CVE-2026-20469 in the wild and no public exploit code.
Sources
Also known as A-518601919, ASB-A-518601919, GHSA-97c8-m5xh-6cgp, M-AUTO00834868.