The remote Fedora host is missing one or more security updates.
The 4.5.2 stable update contains a number of important fixes across the tree. This build should also boot on some of the i686 systems that would not boot before. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
Update the affected binutils and / or kernel packages.