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The critical bugs in this release impact Adobe Acrobat 2017 , Acrobat DC , and Acrobat Reader DC on Windows and macOS machines .
 ( discover vulnerability: impact,  The critical bugs: vulnerability, Adobe Acrobat 2017: vulnerable system, Acrobat DC: vulnerable system, Acrobat Reader DC: vulnerable system, Windows and macOS machines: supported platform) 
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: impact,  The critical bugs: vulnerability, Adobe Acrobat 2017: vulnerable system, Acrobat DC: vulnerable system, Acrobat Reader DC: vulnerable system, Windows and macOS machines: supported platform) 