A flaw in all versions of the popular C standard libraries uClibe and uClibe-ng can allow for DNS poisoning attacks against target devices.
https://threatpost.com/dns-bug-millions-routers-iot-risk/179478/
More than 1.8 million attacks, against half of all corporate networks, have already launched to exploit Log4Shell.
https://threatpost.com/log4j-attacks-state-actors-worm/177088/