Permissions, Privileges, and Access Controls
The Enterprise Meeting Server in IBM Lotus Sametime 8.5.2 and 220.127.116.11 allows remote authenticated users to spoof the origin of chat messages, or compose anonymous chat messages, by leveraging meeting-attendance privileges.
CWE-264 - Permissions Privileges and Access Controls
CWE 264 (permissions, privileges, and access controls) is not a weakness in and of itself, rather it is a category of weaknesses related to the management of permissions, privileges, and other security features used to perform access control. If not addressed, the weaknesses in this category allow attackers to gain privileges for an unintended sphere of control, access sensitive information, and execute arbitrary commands.