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While combing through WikiLeaks ’ Vault 7 data dump , Cisco has unearthed a critical vulnerability affecting 300 + of its switches and one gateway that could be exploited to take over the devices .
 Cisco: discoverer; a critical vulnerability: vulnerability
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:
 Cisco: discoverer; a critical vulnerability: vulnerability