CVE-2021-0587: Google Android

High severity, CVSS 7.8. EPSS: 0.1% chance of exploitation in the next 30 days.

In StreamOut::prepareForWriting of StreamOut.cpp, there is a possible out of bounds write due to a use after free. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-8.1 Android-9 Android-10 Android-11Android ID: A-185259758

Affected products

• Google Android: version 8.1 only; version 9.0 only; version 10.0 only; version 11.0 only

Published 2021-07-14. Last modified 2026-06-17.