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Remco Vermeulen found a privilege escalation bug in Western Digital ’s My Cloud devices , which he said allows an attacker to bypass the admin password on the drive , gaining “ complete control ” over the user ’s data .
 a privilege escalation bug: vulnerability; Remco Vermeulen: discoverer; My Cloud devices: vulnerable system; Western 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:
 a privilege escalation bug: vulnerability; Remco Vermeulen: discoverer; My Cloud devices: vulnerable system; Western Digital: vulnerable system owner