The Phone is Listening: A Cold War–Style Vulnerability in Modern VoIP

I don’t know about you, but when I think about “critical vulnerabilities,” I usually picture ransomware, data theft, or maybe a server falling over at 2 a.m. while someone frantically searches Slack for the last good backup. What I don’t picture is a scene straight out of a Cold War spy film...

Input validation

A Malformed Input String to /cgi-bin/deleteCA on Grandstream GXP16xx VoIP 1.0.4.128 phones allows attackers to delete configuration parameters and gain admin access to the device...