CVE-2020-0203 Privilege escalation in Android

What is CVE-2020-0203?

CVE-2020-0203 is a high-severity vulnerability in Google Android, published on 11 Jun 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In freeIsolatedUidLocked of ProcessList.java, there is a possible UID reuse due to improper cleanup. This could lead to local escalation of privilege between constrained processes with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10Android ID: A-146313311

Weakness: CWE-404

Which versions are affected by CVE-2020-0203?

It affects 1 product.

Products include Google Android.

How do I fix CVE-2020-0203?

No fix has been published for CVE-2020-0203 yet. Limit exposure of the affected software until one is available.

Is CVE-2020-0203 being exploited?

There is no known exploitation of CVE-2020-0203 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

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 GHSA-mcg9-53rc-5qrh.