1709
It ’s worth noting that while some of the vulnerabilities have been classified as critical and high severity by Cure53 , NTP developers have only assigned medium , low and informational - level severity ratings to the discovered flaws .
 ( discover vulnerability: have been classified,  Cure53: discoverer, the vulnerabilities: 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 classified,  Cure53: discoverer, the vulnerabilities: vulnerability) 