Quote:WhatsApp developers have fixed a bug in the Android and iOS versions of the WhatsApp mobile app that allowed hackers to take over the application when users answered an incoming video call.

Natalie Silvanovich, a security researcher with Google's Project Zero security research team, discovered the WhatsApp vulnerability at the end of August. She described the vulnerability as a "memory corruption bug in WhatsApp's non-WebRTC video conferencing implementation."
"Heap corruption can occur when the WhatsApp mobile application receives a malformed RTP packet," Silvanovich said in a bug report. "This issue can occur when a WhatsApp user accepts a call from a malicious peer."