1427
When DefenseCode first came out with the vulnerability in 2013 , Rapid7 researchers also found a number of flaws in other popular UPnP implementations , and by scanning the Internet , revealed that there were approximately 15 million devices with a vulnerable Broadcom UPnP implementation .
 Rapid7 researchers: discoverer; flaws: vulnerability; UPnP implementations: vulnerable system
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: discover vulnerability 
  Option: vulnerable system owner, vulnerability, capabilities, time, vulnerable system version, discoverer, common vulnerabilities and exposures, supported platform, vulnerable system 
Text: {0} 
Answer:
 Rapid7 researchers: discoverer; flaws: vulnerability; UPnP implementations: vulnerable system