FreeBSD Security Advisory (FreeBSD-SA-05:06.iir.asc)

The remote host is missing an update to the system as announced in the referenced advisory FreeBSD-SA-05:06.iir.asc
Upgrade your system to the appropriate stable release or security branch dated after the correction date
The iir(4) driver provides support for the Intel Integrated RAID controllers and ICP Vortex RAID controllers. The default permissions on the /dev/iir device node allow unprivileged local users to open the device and execute ioctl calls.