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What is Wireshark?

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

Wireshark is hosted by the Wireshark Foundation, a nonprofit which promotes protocol analysis education. Wireshark and the foundation depend on your contributions in order to do their work. If you or your organization would like to contribute or become a sponsor, please visit wiresharkfoundation.org.

What’s New

Bug Fixes

If you are upgrading Wireshark 4.2.0 or 4.2.1 on Windows you will need to download and install Wireshark 4.2.5 or later by hand.

The following vulnerabilities have been fixed:

The following bugs have been fixed:

  • Flow Graph scrolls in the wrong direction vertically when pressing Up/Down. Issue 12932.

  • TCP Stream Window Scaling not working in version 2.6.1 and later. Issue 15016.

  • TCP stream graphs (Window scaling) axis display is confusing. Issue 17425.

  • LUA get_dissector does not give the correct dissector under 32-bit version. Issue 18367.

  • Lua: Segfault when registering a field or expert info twice. Issue 19194.

  • SSH can not decrypt when KEX is [email protected]. Issue 19240.

  • Wireshark crash related to Lua DissectorTable.heuristic_new() Issue 19603.

  • MATE fails to extract HTTP2 User-Agent header. Issue 19619.

  • Fuzz job issue: fuzz-2024-02-29-7169.pcap. Issue 19679.

  • Fuzz job issue: fuzz-2024-03-02-7158.pcap. Issue 19684.

  • Problem to Decode 5GC-N7 HTTP for payload Application/JSON. Issue 19723.

  • Copying data as C String produces incorrect string. Issue 19735.

  • Incorrect decoding of supported Tx HE-MCS. Issue 19737.

  • reordercap: Fix packet reordering with multiple IDB’s not at the beginning of a pcapng file. Issue 19740.

  • Wrong EPB lengths written if existing pcapng file has epb_hash options. Issue 19766.

  • On Windows, Export Displayed Packets dialog does not have "include depended upon packets" checkbox. Issue 19772.

  • vnd.3gpp.sms binary payload NOT decoded inside HTTP2 5GC. Issue 19773.

  • NAS 5G message container dissection. Issue 19793.

  • Incorrect interpretation of algorithm name in packet-tls-utils.c. Issue 19801.

New and Updated Features

There are no new or updated features in this release.

New Protocol Support

There are no new protocols in this release.

Updated Protocol Support

5co_legacy, 5co_rap, BT Mesh, CQL, DOCSIS MAC MGMT, E.212, EPL, FC FZS, GQUIC, GRPC, GSM RP, HTTP2, ICMPv6, IEEE 1905, IEEE 802.11, IPARS, JSON-3GPP, LAPD, LLDP, MATE, MONGO, NAS 5GS, NR-RRC, PER, PFCP, PTP, QUIC, SSH, TIPC, and ZBD

New and Updated Capture File Support

BLF and pcapng

Updated File Format Decoding Support

There is no updated file format support in this release.

Prior Versions

This document only describes the changes introduced in Wireshark 4.2.5. You can find release notes for prior versions at the following locations:

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 Help  About Wireshark  Folders or tshark -G 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’s Q&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.

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

You can learn protocol analysis and meet Wireshark’s developers at SharkFest.

How You Can Help

The Wireshark Foundation helps as many people as possible understand their networks as much as possible. You can find out more and donate at wiresharkfoundation.org.

Frequently Asked Questions

A complete FAQ is available on the Wireshark web site.