The vulnerability discovered in Samsung security is quite serious, as it allows using the malicious MMS code to take control of the device. The victim does not even have to open the message, it is enough that it is delivered to the phone.
The hacker has the ability to read text messages, view photos, launch applications, also has access to contacts, microphone and conversation history.
According to Sekurak website, most probably every Samsung smartphone released after 2014 is affected by some variant of this vulnerability.
In May, Samsung released an update that removes this vulnerability but the update has not yet reached all smartphones.