Hi Bartek. The Bitcoin-related ports are getting old. The upstream current released version is [0.14.2](https://github.com/bitcoin/bitcoin/releases) and the FreeBSD ports collection has 0.12.1 from November 2016.
I don't know of any security issues, but a number of important new features which are dependant on changes in the P2P protocol have occured in intermediate versions. Version 0.14 is a major stable release, and has had some shake-down time already (April 2017). Thanks! --- Peter D. Gray || Founder, Coinkite || Twitter: @dochex || GPG: A3A31BAD 5A2A5B10
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