This indicates an attack attempt to exploit an Insecure Library Loading vulnerability in Wireshark.
The vulnerability is due to an improper search path in the application leading to insecure loading of riched20.dll.dll file. An attacker can exploit this by tricking an unsuspecting user into opening a file from a directory and execute arbitrary code within the context of the application.
Wireshark 1.12.x before 1.12.10
Wireshark 2.0.x before 2.0.2
System Compromise: Remote attackers can gain control of vulnerable systems.
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