Facebook posted a security advisory for a buffer overflow vulnerability in its subsidiary WhatsApp that could allow an attacker to install Pegasus spyware on victims devices.

The  Israeli NSO group developed spyware allows its users to turn on a phone’s camera and mic, scan emails and messages, and collect the user’s location data and can be exploited by injecting the malware by simply calling the target without a trace and without the need for the victim to answer their device.

The vulnerability affects WhatsApp for Android prior to v2.19.134, WhatsApp Business for Android prior to v2.19.44, WhatsApp for iOS prior to v2.19.51, WhatsApp Business for iOS prior to v2.19.51, WhatsApp for Windows Phone prior to v2.18.348, and WhatsApp for Tizen prior to v2.18.15.

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