ServerDocs Server in Apple OS X Server before 5.2 supports the RC4 cipher, which might allow remote attackers to defeat cryptographic protection mechanisms via unspecified vectors.
The Apache HTTP Server in Apple OS X before 10.12 and OS X Server before 5.2 follows RFC 3875 section 4.1.18 and therefore does not protect applications from the presence of untrusted CGI client data in the HTTP_PROXY environment variable, which might allow remote attackers to redirect an application's outbound HTTP traffic to an arbitrary proxy server via a crafted Proxy header in an HTTP request, aka an "httpoxy" issue, a related issue to CVE-2016-5387.
Wiki Server in Apple OS X Server before 4.1 allows remote attackers to bypass intended restrictions on Activity and People pages by connecting from an iPad client.
The Firewall component in Apple OS X Server before 4.1 uses an incorrect pathname in configuration files, which allows remote attackers to bypass network-access restrictions by sending packets for which custom-rule blocking was intended.