The ZDNet article (and this post) are meant to reach general audience with interest in FreePBX. I included the source article for people like you to contact the researches to get more details.
The article says:
@BlazeStudios I had to shutdown a PBX server because someone installed crypto miner in it. This could be related to this vulnerability or another one. I am not sure. But the risk is real.
The users in this forum are mixed audience with different level of IT/PBX knowledge. My aim to bring awareness to general audience to take action by updating their systems. And for people interested in details, the second link provide the source article with the researcher names to get more information.