Google has published a security advisory, highlighting vulnerabilities in Android Operating System on 07th April, 2021. It is recommended that you take the necessary precautions by ensuring your products are always updated.
For more information on this Android OS update you can follow this URL:
https://source.android.com/security/bulletin/2021-04-01
The Guyana National CIRT recommends that users and administrators review this update and apply it where necessary.
PDF Download: Google Releases Security Updates for Android OS.pdf
References
https://cyber.gc.ca/en/alerts/android-security-advisory-april-2021-monthly-rollup