612
However , Microsoft did not highlight the SMB flaw until April 14 , when a hacker group known as the Shadow Brokers released a set of exploits , allegedly stolen from the U.S.National Security Agency .
 Microsoft: vulnerable system owner; the SMB flaw: vulnerability; until April 14: time
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:
 Microsoft: vulnerable system owner; the SMB flaw: vulnerability; until April 14: time