Summary
The remote host is missing an update to the system as announced in the referenced advisory.
Solution
Update your system with the appropriate patches or software upgrades.
http://dev.mybboard.net/issues/464
http://dev.mybboard.net/issues/418
http://secunia.com/advisories/36803
http://blog.mybboard.net/2009/09/21/mybb-1-4-9-released-security-update/ http://www.vuxml.org/freebsd/beb6f4a8-add5-11de-8b55-0030843d3802.html
Insight
The following package is affected: mybb