CVE-2023-20666 Memory corruption in MT6789, MT6855, MT6895, MT6983, MT8188, MT8195, MT8365, MT8781, MT8795T, MT8798

Medium 6.7 Published 6 Apr 2023 Updated 13 Feb 2025

A missing bounds check in the MediaTek display driver allows local attackers with system privileges to achieve privilege escalation via out-of-bounds write.

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-2023-20666?

CVE-2023-20666 is a medium-severity memory corruption vulnerability in Google Android, published on 6 Apr 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In display drm, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS07310651; Issue ID: ALPS07292173.

Weakness: CWE-787

Which versions are affected by CVE-2023-20666?

It affects 1 product.

Products include Google Android.

How do I fix CVE-2023-20666?

No fix has been published for CVE-2023-20666 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-2023-20666 being exploited?

There is no known exploitation of CVE-2023-20666 in the wild and no public exploit code.

All Google Android vulnerabilities

Sources

Also known as GHSA-cmjm-8mpc-4gh4.