Realtek Jungle SDK Exploit Attempts Deliver Cling Botnet With STUN-Based C2

Attackers are exploiting Realtek Jungle SDK vulnerabilities in exploit attempts that deliver the Cling botnet, which uses STUN-based command-and-control infrastructure. Separately, researchers report hackers exploiting 24 IoT vulnerabilities to install the ClingSTUN Linux backdoor on exposed devices. The activity underscores the continued recruitment of internet-facing IoT gear into botnets.