What is Wireshark?

Wireshark is the world’s most popular network protocol analyzer. It is used for troubleshooting, analysis, development and education.

What’s New

The Windows installers now ship with Npcap 1.10. They previously shipped with Npcap 1.00.

Bug Fixes

The following vulnerabilities have been fixed:

The following bugs have been fixed:

  • SIP response single-line multiple Contact-URIs decoding error Bug 13752.

  • Adding filter while "Telephony→VoIP Calls→Flow Sequence" open causes OOB memory reads and potential crashes. Bug 16952.

  • QUIC packet not fully dissected Bug 17077.

  • SOMEIP-SD hidden entries are off Bug 17091.

  • Problem with calculation on UDP checksum in SRv6 Bug 17097.

  • Dark mode not working in Wireshark 3.4.2 on macOS Bug 17098.

  • Wireshark 3.4.0: build failure on older MacOS releases, due to 'CLOCK_REALTIME' Bug 17101.

  • TECMP: Status Capture Module messages shows 3 instead of 2 bytes for HW version Bug 17133.

  • Documentation - editorial error - README.dissector bad reference Bug 17141.

  • Cannot save capture with comments to a format that doesn’t support it (no pop-up) Bug 17146.

  • AUTOSAR-NM: PNI TF-String wrong way around Bug 17154.

  • Fibre Channel parsing errors even with the fix for #17084 Bug 17168.

  • f5ethtrailer: Won’t find a trailer after an FCS that begins with a 0x00 byte Bug 17171.

  • f5ethtrailer: legacy format, low noise only, no vip name trailers no longer detected Bug 17172.

  • Buildbot crash output: fuzz-2021-01-22-3387835.pcap Bug 17174.

  • Dissection error on large ZVT packets Bug 17177.

  • TShark crashes with -T ek option Bug 17179.

New and Updated Features

New Protocol Support

There are no new protocols in this release.

Updated Protocol Support


New and Updated Capture File Support

f5ethtrailer and pcapng

Getting Wireshark

Wireshark source code and installation packages are available from https://www.wireshark.org/download.html.

Vendor-supplied Packages

Most Linux and Unix vendors supply their own Wireshark packages. You can usually install or upgrade Wireshark using the package management system specific to that platform. A list of third-party packages can be found on the download page on the Wireshark web site.

File Locations

Wireshark and TShark look in several different locations for preference files, plugins, SNMP MIBS, and RADIUS dictionaries. These locations vary from platform to platform. You can use About → Folders to find the default locations on your system.

Getting Help

The User’s Guide, manual pages and various other documentation can be found at https://www.wireshark.org/docs/

Community support is available on Wireshark’sQ&A site and on the wireshark-users mailing list. Subscription information and archives for all of Wireshark’s mailing lists can be found on the web site.

Issues and feature requests can be reported on the issue tracker.

Frequently Asked Questions

A complete FAQ is available on the Wireshark web site.

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