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In an online conversation with Bleeping Computer , Hörsch , who 's a researcher for German cyber-security firm Securai , says that after he analyzed the router 's firmware , he discovered a vulnerability in the feature that handles incoming SMS messages .
 a vulnerability: vulnerability; he: discoverer
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:
 a vulnerability: vulnerability; he: discoverer