WhatsApp patched a serious security hole that allowed cybercriminals to remotely run malicious code on target endpoints.

As explained in the Official Security Advisory, the vulnerability is an integer overflow vulnerability found in WhatsApp for Android (opens in a new tab) earlier from 2.22.16.12, Business on Android from 2.22.16.12, iOS from 2.22.16.12 and Business on iOS from 2.22.16.12.