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
This is expected to be the final release of the 4.0 branch.
This is the last release to support Windows 8.1 and Windows Server 2012.
Bug Fixes
A regression in the TCP Stream Graph "Time Sequence (tcptrace)" receive window line behavior introduced in 4.0.15 and 4.2.5 has been fixed. Issue 19846
The following vulnerability has been fixed:
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wnpa-sec-2024-11 NTLMSSP dissector crash. Issue 19943. CVE-2024-8250.
The following bugs have been fixed:
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Fuzz job issue: fuzz-2024-01-31-7745.pcap. Issue 19627.
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OSS-Fuzz 70534: wireshark:fuzzshark_ip_proto-udp: Stack-overflow in dissect_cbor_main_type. Issue 19935.
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6loWPAN: Page Number Field Incorrect Registration. Issue 19934.
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Fuzz job issue: fuzz-2024-07-28-7314.pcap. Issue 19964.
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PacketBB incorrectly reports "Malformed Packet" Issue 19972.
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
6LoWPAN, CAN-ETH, CBOR, LBMSRS, NTLMSSP, PacketBB, and PN-MRP
New and Updated Capture File Support
There is no new or updated capture file support in this release.
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 4.0.17. 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 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.