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Perhaps the most serious issue Cisco has released a patch for is critical bug CVE -2018-0171 affecting Smart Install , a Cisco client for quickly deploying new switches for Cisco IOS Software and Cisco IOS XE Software .
 a patch: patch; critical bug: vulnerability; CVE -2018-0171: common vulnerabilities and exposures; Cisco: releaser; the most serious issue: 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: patch vulnerability 
  Option: issues addressed, patch, vulnerability, time, vulnerable system version, releaser, patch number, common vulnerabilities and exposures, supported platform, vulnerable system 
Text: {0} 
Answer:
 a patch: patch; critical bug: vulnerability; CVE -2018-0171: common vulnerabilities and exposures; Cisco: releaser; the most serious issue: vulnerability