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Researchers from security firm ERPScan have disclosed a vulnerability in the SAP GUI application which it has described as perhaps the most dangerous SAP issue since 2011 , as it affects not only every SAP customer but also every user .
 ( discover vulnerability: have disclosed,  Researchers: discoverer, a vulnerability: vulnerability, the SAP GUI application: vulnerable system) 
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: have disclosed,  Researchers: discoverer, a vulnerability: vulnerability, the SAP GUI application: vulnerable system) 