The remote host is running a version of macOS that is prior to 10.13. It is, therefore, affected by multiple vulnerabilities in the following components :

 - Apache
 - AppSandbox
 - AppleScript
 - Application Firewall
 - ATS
 - Audio
 - CFNetwork
 - CFNetwork Proxies
 - CFString
 - Captive Network Assistant
 - CoreAudio
 - CoreText
 - DesktopServices
 - Directory Utility
 - file
 - Fonts
 - fsck_msdos
 - HFS
 - Heimdal
 - HelpViewer
 - IOFireWireFamily
 - ImageIO
 - Installer
 - Kernel
 - kext tools
 - libarchive
 - libc
 - libexpat
 - Mail
 - Mail Drafts
 - ntp
 - Open Scripting Architecture
 - PCRE
 - Postfix
 - Quick Look
 - QuickTime
 - Remote Management
 - SQLite
 - Sandbox
 - Screen Lock
 - Security
 - Spotlight
 - WebKit
 - zlib

Note that successful exploitation of the most serious issues can result in arbitrary code execution.

The version of Apache HTTP Server 2.2 installed on the remote host is prior to 2.2.32 and is affected by multiple vulnerabilities :

 - A remote proxy manipulation vulnerability exists related to missing protection against RFC 3875 section 4.1.18 namespace conflicts. The issue is triggered when handling requests containing 'Proxy' HTTP headers, as these may be stored in the HTTP_PROXY environment variable also commonly used to configure an outbound HTTP proxy for CGI applications. With a specially crafted request, a remote attacker can specify an arbitrary HTTP proxy server to be used by CGI applications relying on the HTTP_PROXY environment variable. (CVE-2016-5387)
 - A flaw exists that is triggered when handling whitespace patterns in User-Agent headers. This may allow a remote attacker to use a specially crafted User-Agent header to cause the program to incorrectly handle sequences of requests, potentially interpreting responses incorrectly and polluting the cache, or disclosing content from one request to a second downstream user-agent. (CVE-2016-8743)

ID	Name	Product	Family	Published	Updated	Severity
700511	macOS < 10.13 Multiple Vulnerabilities	Nessus Network Monitor	Operating System Detection	4/10/2019	4/10/2019	critical
9486	Apache HTTP Server 2.2.x < 2.2.32 Multiple Vulnerabilities	Nessus Network Monitor	Web Servers	8/26/2016	3/6/2019	medium

Detections

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critical

medium