CVE-2023-20621 Memory corruption in MT6739, MT6761, MT6762, MT6765, MT6771, MT6789, MT6879, MT6883, MT6885, MT6893, MT6895, MT6983

What is CVE-2023-20621?

CVE-2023-20621 is a medium-severity memory corruption vulnerability in Google Android, published on 7 Mar 2023. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In tinysys, 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: ALPS07664755; Issue ID: ALPS07664755.

Weakness: CWE-20

Which versions are affected by CVE-2023-20621?

It affects 1 product.

Products include Google Android.

How do I fix CVE-2023-20621?

Apply the vendor's patch.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2023-20621 being exploited?

There is no known exploitation of CVE-2023-20621 in the wild and no public exploit code.

Other vulnerabilities in Google Android

• CVE-2026-58704 Google Pixel Improper Authorization Exploited High 8.8
• CVE-2025-48543 Android Runtime Use-After-Free Exploited High 8.8
• CVE-2023-35674 Android Framework Privilege Escalation Exploited High 8.8
• CVE-2025-48595 Android Framework Integer Overflow Exploited High 8.4
• CVE-2024-32896 Android Pixel Privilege Escalation Exploited High 8.1

All Google Android vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as A-264208866, ASB-A-264208866, GHSA-p7g8-pvw9-x42q, M-ALPS07664755.