Facebook has discovered the vulnerability of its WhatsApp application. The detected vulnerability allows attackers to install malicious software (spyware) into the user's mobile device, through the function of calling other users of this popular application. The attacker can infect the mobile device by simply calling the user, regardless of whether the called user accepts the call or not.
Facebook has detected this vulnerability in May. Development Facebook teams reacted quickly and created an appropriate patch to protect their users by preventing further exploitation of the vulnerability.
The National CERT recommends users to update their mobile devices by downloading the latest available version of WhatsApp application and thus preventing any possible misuse of detected vulnerability. As an additional form of protection, users can also update the operating systems of their devices.
Source: The Guardian