SecureCRT v4.1 and below contains a remotely exploitable command execution vulnerability. Patch available here.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/35116/SecureCRT_Remote_Command_Execution.pdf
Source: https://packetstormsecurity.com/files/35116/SecureCRT_Remote_Command_Execution.pdf.html