The Unified Messaging Service (UMS) in Cisco Unity Connection 10.5 and earlier allows remote authenticated users to obtain sensitive information by reading log files, aka Bug ID CSCur06493.
https://exchange.xforce.ibmcloud.com/vulnerabilities/98493
http://www.securitytracker.com/id/1031177
http://tools.cisco.com/security/center/viewAlert.x?alertId=36340
http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-7988