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The technical details of security vulnerabilities impacting the Nvidia Video and an Android driver have been revealed by Zimperium , which acquired the flaws as part of an exploit acquisition program .
 ( discover vulnerability: have been revealed,  the Nvidia Video: vulnerable system, an Android driver: vulnerable system, Zimperium: discoverer, the flaws: vulnerability, an exploit acquisition program: 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: have been revealed,  the Nvidia Video: vulnerable system, an Android driver: vulnerable system, Zimperium: discoverer, the flaws: vulnerability, an exploit acquisition program: vulnerability) 