The version of Apple Safari installed on the remote host is prior to 11.1.2. It is, therefore, affected by multiple vulnerabilities as described in the HT208695 security advisory.
Binary data 700504.prm
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4260
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4261
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4262
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4263
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4264
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4265
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4266
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4267
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4270
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4271
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4272
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4273
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4274
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4278
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4279
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4284
www.nessus.org/u?31e9009b
support.apple.com/en-us/HT208934