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According to FireEye , APT28 has exploited a number of known security flaws in the past including previously undiscovered " zero day " vulnerabilities in Adobe Flash Player , Java , and Windows .
 a number of known security flaws: vulnerability; APT28: discoverer; previously undiscovered " zero day " vulnerabilities: vulnerability; Adobe Flash Player: vulnerable system; Java: vulnerable system; Windows: 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:
 a number of known security flaws: vulnerability; APT28: discoverer; previously undiscovered " zero day " vulnerabilities: vulnerability; Adobe Flash Player: vulnerable system; Java: vulnerable system; Windows: vulnerable system