CVE-2026-20472 Memory corruption in MediaTek chipset
A local attacker with System privileges can cause a denial of service via an out-of-bounds write in MediaTek chipset firmware.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-20472?
CVE-2026-20472 is a medium-severity memory corruption 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 TFA, there is a possible out of bounds write due to a missing bounds check. This could lead to local denial of service if a malicious actor has already obtained the System privilege. User interaction is not needed for exploitation. Patch ID: ALPS10991467; Issue ID: MSV-7764.
Weakness: CWE-787
Which versions are affected by CVE-2026-20472?
How do I fix CVE-2026-20472?
No fix has been published for CVE-2026-20472 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-2026-20472 being exploited?
There is no known exploitation of CVE-2026-20472 in the wild and no public exploit code.
Sources
Also known as GHSA-3xg4-36gp-wp4m.