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Microsoft issued today an security update , but it was n't to backport the " fixed " Meltdown patches for older Windows 10 versions .
 today: time; Microsoft: releaser; an security update: patch; the " fixed " Meltdown patches: patch; 10 versions: vulnerable system version; 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: 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:
 today: time; Microsoft: releaser; an security update: patch; the " fixed " Meltdown patches: patch; 10 versions: vulnerable system version; Windows: vulnerable system