The remote host has Safari installed that is older than 6.2 or 7.1, and is thus unpatched for the following WebKit vulnerabilities :
Binary data 8395.prm
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6663
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4363
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4409
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4410
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4411
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4412
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4413
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4414
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4415
support.apple.com/kb/HT6440