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.
https://support.apple.com/HT207171
http://www.securitytracker.com/id/1036853
http://www.securityfocus.com/bid/93061
http://lists.apple.com/archives/security-announce/2016/Sep/msg00009.html