currentブランチと同様、Vault7関連の修正になります。
What's new in 6.37.5 (2017-Mar-09 11:54): !) www - fixed http server vulnerability; *) chr - fixed problem when transmit speed was reduced by interface queues; *) dhcp - do not listen on IPv4/IPv6 client to IPv6 MLD packets; *) dude - (changes discussed here: https://wiki.mikrotik.com/wiki/Manual:The_Dude_v6/dude_v6.xx_changelog); *) export - do not show "read-only" IRQ entries; *) filesystem - implemented procedures to verify and restore internal file structure integrity upon upgrading; *) firewall - do not allow to set "time" parameter to 0s for "limit" option; *) firewall - fixed import of exported configuration that had updated "limit" setting; *) graphing - fixed graphing crash when high amount of traffic is processed; *) hotspot - fixed rare kernel crash on multicore systems; *) hotspot - fixed redirect to URL where escape characters are used (requires newly generated HTML files); *) hotspot - show Host table commentaries also in Active tab and vice versa; *) interface - do not treat multiple zeros as single zero on name comparison; *) irq - properly detect all IRQ entries; *) l2tp-client - fixed IPSec policy generation after reboot; *) lcd - show fan2 speed only if it is available; *) leds - fixed defaults for RBSXT5HacD2nr2; *) mmips - improved general stability; *) rb3011 - fixed noise from buzzer after silent boot; *) switch - fixed crash when trying to configure second master port on the same chipset (RB3011, RB2011, CCR1009-8G-1S+); *) userman - allow access to User Manager users page only through "/user" URL; *) userman - show warning when no users are selected for CSV file generation; *) winbox - added "add-relay-info" and "relay-info-remote-id" to DHCP relay; *) winbox - added H flag to "/ip arp" ; *) winbox - added missing "use-fan2" and "active-fan2" to "/system health"; *) winbox - allow shorten bytes to k,M,G in bridge firewall just like in “/ip firewall”; *) winbox - do not hide "power-cycle-after" option; *) winbox - do not hide 00:00:00:00:00:00 MAC address in unpublished ARPs; *) winbox - fixed matching "connection-state=untracked" connections; *) winbox - fixed typo in “/system resources pci” list; *) winbox - hide advertise tab in Hotspot user profile configuration if "transparent-proxy" is not enabled; *) winbox - make "power-cycle-after" show correct value; *) winbox - make "power-cycle-interval" not to depend on "power-cycle-ping-enabled" in PoE settings; *) winbox - properly show BGP communities in routing filters table filter; *) wireless - fixed scan tool stuck in background; *) wireless - improved compatibility with Intel 2200BG wireless card; *) wireless - update Thailand country frequency settings;
Vault7関連の修正がメインになりますが、それ以外にも、2月にバージョンアップしたWinbox関連の修正が主な内容になります。
mipsbeに適用した限りでは問題は起きていません。特に新機能を追わないのであればbugfixブランチの適用が一番いいと思います。(バグが基本的に少ないというメリット)