The version of Apple Safari installed on the remote host is prior to 11.0. It is, therefore, affected by multiple vulnerabilities as described in the HT208116 security advisory.
Binary data 700499.prm
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7081
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7085
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7087
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7089
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7090
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7091
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7092
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7093
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7094
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7095
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7096
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7098
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7099
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7100
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7102
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7104
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7106
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7107
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7109
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7111
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7117
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7120
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7142
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7144
www.nessus.org/u?8e4748a9
support.apple.com/en-us/HT208116