1390
While initially this zero - day was classified as an Office vulnerability , Microsoft 's security advisory revealed this vulnerability also affected WordPad , a free document viewer included by default with all Windows versions .
 ( discover vulnerability: was classified,  this zero - day: vulnerability, an Office vulnerability: vulnerability) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: phishing, data breach, ransom, discover vulnerability, patch vulnerability, Arguments type: vulnerable system, capabilities, vulnerability, number of victim, issues addressed, compromised data, damage amount, common vulnerabilities and exposures, victim, patch number, number of data, tool, discoverer, time, purpose, place, payment method, releaser, vulnerable system version, attacker, supported platform, patch, price, vulnerable system owner, trusted entity, attack pattern. 
Text: {0} 
Answer:
 ( discover vulnerability: was classified,  this zero - day: vulnerability, an Office vulnerability: vulnerability) 