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The new vulnerability affects Xen 4.8.x , 4.7.x , 4.6.x , 4.5.x , and 4.4.x and has existed in the Xen code base for over four years .
 The new vulnerability: vulnerability; Xen: vulnerable system; 4.8.x: vulnerable system version; 4.7.x: vulnerable system version; 4.6.x: vulnerable system version; 4.5.x: vulnerable system version; 4.4.x: vulnerable system version
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:
 The new vulnerability: vulnerability; Xen: vulnerable system; 4.8.x: vulnerable system version; 4.7.x: vulnerable system version; 4.6.x: vulnerable system version; 4.5.x: vulnerable system version; 4.4.x: vulnerable system version