Wireshark has released updates for both the 3.6 and 4.0 lines. There appear to be quite a few bug fixes, but no vulnerability fixes.
[1] https://www.wireshark.org/docs/relnotes/wireshark-4.0.2.html
[2] https://www.wireshark.org/docs/relnotes/wireshark-3.6.10.html
[3] https://www.wireshark.org/download.html
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Jim Clausing, GIAC GSE #26
jclausing –at– isc [dot] sans (dot) edu
(c) SANS Internet Storm Center. https://isc.sans.edu Creative Commons Attribution-Noncommercial 3.0 United States License.