IoT security company Forescout on Tuesday revealed that four popular TCP/IP stacks — specifically FreeBSD, Siemens’ Nucleus, IPnet and NetX — are affected by a total of nine DNS-related flaws that can be exploited for remote code execution (including to take control of targeted devices), DoS attacks, and DNS cache poisoning.

The vulnerabilities, collectively tracked as NAME:WRECK, could affect billions of devices that use these TCP/IP stacks for network communications, but Forescout researchers estimate that at least 100 million devices are exposed to attacks.