Gunkerty Jeb writes "In a project that found more than 80 million unique IP addresses responding to Universal Plug and Play (UPnP) discovery requests, researchers at Rapid7 were shocked to find that somewhere between 40 and 50 million of those are vulnerable to at least one of three known attacks. A Rapid7 white paper enumerated UPnP-exposed systems connected to the Internet and identified the number of vulnerabilities present in common configurations. Researchers found that more than 6,900 product models produced by 1,500 different vendors contained at least one known vulnerability, with 23 million systems housing the same remote code execution flaw. 'This research was primarily focused on vulnerabilities in the SSDP processor across embedded devices,' Rapid7's CSO HD Moore said. 'The general process was to identify what was out there, make a list of the most commonly used software stacks, and then audit those stacks for vulnerabilities. The results were much worse than we anticipated, with the most commonly used software stack (libupnp) also being the most vulnerable.'"