You have a very limited imagination. Wireshark is regularly attacked -- it parses random data it gets off the network, therefore it can be attacked using deliberately malformed packets. See https://www.wireshark.org/security/ for more info.
Every single of these vulnerabilities are crashes and infinite loops. The worst thing you can do - if I am running a 5-year old Wireshark - is to make it crash if I am visiting one of your web services. And you probably can already do that in newer versions if you dig enough.