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Last year , the threats posed by these vulnerabilities tipped over from the theoretical realm to one of documented reality when US - CERT released a report that warned of at least 36 organizations worldwide impacted by attacks that leveraged a vulnerability in SAP 's Invoker Servlet functionality running on SAP Java platforms .
 ( discover vulnerability: posed,  these vulnerabilities: vulnerability, the threats: discoverer, Last year: time) 
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: posed,  these vulnerabilities: vulnerability, the threats: discoverer, Last year: time) 