The default configuration of TekRADIUS 3.0 uses the sa account to communicate with Microsoft SQL Server, which makes it easier for remote attackers to obtain privileged access to the database and the underlying Windows operating system.

TekRADIUS 3.0 uses BUILTIN\Users:R permissions for the TekRADIUS.ini file, which allows local users to obtain obfuscated database credentials by reading this file.

Multiple SQL injection vulnerabilities in TekRADIUS 3.0 allow context-dependent attackers to execute arbitrary SQL commands via (1) the GUI client, as demonstrated by input to the Browse Users text box in the Users tab; or (2) the command-line client, as demonstrated by a certain trcli -r command.