Did somebody tried Heartbleed test on Mikrotik https hotspot?
http://filippo.io/Heartbleed/
I just verified, the webfig is not affected.
Wonder what version of OpenSSL RouterOS uses, probably some 0.9.X version, which will imply that all ssl/tls services of RouterOS are unaffected.
Just for kicks, I poked around at other services (SSTP and the like) and can confirm it is not vulnerable on 6.11.