Comment by ofrzeta

From the article I am not totally convinced that "Telecom security sucks today", given they just randomly picked Freeswitch to find a buffer overflow. "Telecom stacks" might or might be not insecure but what's done here is very weak evidence. The Salt Typhoon attacks allegedly exploited a Cisco vulnerability, although the analysts suggest the attackers have been using proper credentials (https://cyberscoop.com/cisco-talos-salt-typhoon-initial-acce...) So nothing to do with Freeswitch or anything.