The kernel loader in EFI in Apple OS X before 10.11.2 allows local users to gain privileges via a crafted pathname.
http://lists.apple.com/archives/security-announce/2015/Dec/msg00005.html
http://www.securitytracker.com/id/1034344
https://support.apple.com/HT205637
Source: MITRE
Published: 2015-12-11
Updated: 2017-09-13
Type: CWE-264
Base Score: 7.2
Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C
Impact Score: 10
Exploitability Score: 3.9
Severity: HIGH