CVE-2020-0409 Integer overflow in Android

What is CVE-2020-0409?

CVE-2020-0409 is a high-severity vulnerability in Google Android, published on 10 Nov 2020. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In create of FileMap.cpp, there is a possible out of bounds write due to an integer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10 Android-8.0 Android-8.1 Android-9Android ID: A-156997193

Weakness: CWE-787, CWE-190

Which versions are affected by CVE-2020-0409?

It affects 1 product.

Products include Google Android.

How do I fix CVE-2020-0409?

Apply the vendor's patch.

Is CVE-2020-0409 being exploited?

There is no known exploitation of CVE-2020-0409 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 A-156997193, ASB-A-156997193, GHSA-43f5-xw85-rggm, UBUNTU-CVE-2020-0409.