1013
Hundreds of thousands of internet gateway devices around the world , primarily residential cable modems , are vulnerable to hacking because of a serious weakness in their Simple Network Management Protocol implementation .
 ( discover vulnerability: are vulnerable,  primarily residential cable modems: vulnerable system, a serious weakness: vulnerability, Simple Network Management Protocol: 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: are vulnerable,  primarily residential cable modems: vulnerable system, a serious weakness: vulnerability, Simple Network Management Protocol: vulnerable system) 