483
The threat , the second such alert in just a month , was spotted by security experts at Kaspersky Lab and fixed as part of Microsoft 's monthly Patch Tuesday release .
 security experts: discoverer; Kaspersky Lab: discoverer; a month: time; The threat: 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:
 security experts: discoverer; Kaspersky Lab: discoverer; a month: time; The threat: vulnerability