The remote host is missing an update to the system as announced in the referenced advisory.

Update your system with the appropriate patches or software upgrades. http://www.phpbb.com/phpBB/viewtopic.php?t=267563 http://www.vuxml.org/freebsd/53e711ed-8972-11d9-9ff8-00306e01dda2.html

The following package is affected: phpbb