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What is connection of cracking WiFi credentials and router?
There are at least these posts about this vulnerability:
http://forum.mikrotik.com/t/new-attack-on-wpa-wpa2-discovered-most-modern-routers-might-be-at-risk/122120/1
http://forum.mikrotik.com/t/pmkid-attack-clientless-wpa2-wpa-psk-attack/122091/1
Please see this forum topic regarding discussed WPA2-PSK brute force attack method:
http://forum.mikrotik.com/t/wpa2-preshared-key-brute-force-attack/122218/1