This indicates an attack attempt to exploit a Buffer Overflow vulnerability in Lattice Semiconductor PAC-Designer.
The vulnerability is due to an error when the vulnerable software handles a maliciously crafted ".pac" file. A remote attacker may be able to exploit this to execute arbitrary code within the context of the application, via a crafted ".pac" file.
Lattice Semiconductor PAC-Designer 6.2.1344 and earlier versions
System Compromise: Remote attackers can gain control of vulnerable systems.
Currently we are not aware of any vendor supplied patch for this issue.