1588
The Amnesia botnet looks for an unpatched remote code execution vulnerability affecting DVR ( digital video recorder ) appliances manufactured by China - based TVT Digital and identified in nearly identical products from more than 70 global vendors .
 an unpatched remote code execution vulnerability: vulnerability; DVR ( digital video recorder ): vulnerable system; China - based TVT Digital: vulnerable system owner
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:
 an unpatched remote code execution vulnerability: vulnerability; DVR ( digital video recorder ): vulnerable system; China - based TVT Digital: vulnerable system owner