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The WannaCry attack is not a zero - day flaw , but rather is based on an exploit that Microsoft patched with its MS17 - 010 advisory on March 14 in the SMB Server .
 ( patch vulnerability: patched,  Microsoft: releaser, MS17 - 010: patch number, March 14: time, the SMB Server: vulnerable system, an exploit: 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:
 ( patch vulnerability: patched,  Microsoft: releaser, MS17 - 010: patch number, March 14: time, the SMB Server: vulnerable system, an exploit: vulnerability) 