3487
The bugs were patched Nov. 8 by Microsoft in a cumulative update for the Edge browser ; Microsoft characterized them as memory corruption flaws and rated them both critical for Windows clients and moderate for Windows server .
 ( patch vulnerability: were patched,  Microsoft: releaser, The bugs: vulnerability, Nov. 8: time, the Edge browser: 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:
 ( patch vulnerability: were patched,  Microsoft: releaser, The bugs: vulnerability, Nov. 8: time, the Edge browser: vulnerable system) 