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In the wake of these latest revelations , Securify researchers again pointed to their own research and security advisories from January 2017 dealing with the same or similar vulnerabilities , found on versions 2.21.119 and 2.21.126 of the firmware .
 ( discover vulnerability: found,  firmware: vulnerable system, similar vulnerabilities: vulnerability, January 2017: time, Securify researchers: discoverer, versions 2.21.119: vulnerable system version, 2.21.126: vulnerable system version) 
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: found,  firmware: vulnerable system, similar vulnerabilities: vulnerability, January 2017: time, Securify researchers: discoverer, versions 2.21.119: vulnerable system version, 2.21.126: vulnerable system version) 