This indicates an attempt to exploit Buffer Overflow vulnerabilities in FlexNet License Server Manager.
The vulnerabilities are due to improper bounds check in the application when handling crafted requests. As a result, a remote attacker can exploit this to execute arbitrary code within the context of the system by sending a crafted packet to a vulnerable server.
Flexera FlexNet Publisher prior to 184.108.40.206 Security Update 1
System Compromise: Remote attackers can gain control of vulnerable systems.
Apply patch available from the website.