1591
As to why a patch has yet to be issued to fix this year - old flaw , Ryan Olson , intelligence director of Unit 42 at Palo Alto Networks , told SC Media on Thursday that it 's up to the manufacturer to create a patch .
 ( patch vulnerability: has yet to be issued to fix,  this year - old flaw: vulnerability, a patch: patch) 
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:
 ( patch vulnerability: has yet to be issued to fix,  this year - old flaw: vulnerability, a patch: patch) 