The XPC implementation in Admin Framework in Apple OS X before 10.10.3 allows local users to bypass authentication and obtain admin privileges via unspecified vectors.
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2015-1130
https://support.apple.com/HT204659
http://lists.apple.com/archives/security-announce/2015/Apr/msg00001.html