Shodan - https://exploits.shodan.io/welcome

Exploit-db - https://www.exploit-db.com/

Packet Storm - https://packetstormsecurity.com/files/tags/exploit

SecurityFocus - http://www.securityfocus.com/bid

SecurityTracker - http://securitytracker.com/

EaST Framework Exploits - http://eastexploits.com/

SecList - http://seclist.us/category/exploits

VulnDB - https://vuldb.com/

Vulners - https://vulners.com/\#help

X-Force - https://exchange.xforce.ibmcloud.com/new

By Kernel Version - http://www.kmbl.us/les/working.php