Wireshark is the world's foremost and widely-used network protocol analyzer. It lets you see what's happening on your network at a microscopic level and is the de facto (and often de jure) standard across many commercial and non-profit enterprises, government agencies, and educational institutions. Wireshark development thrives thanks to the volunteer contributions of networking experts around the globe and is the continuation of a project started by Gerald Combs in 1998.

Features

  • Deep inspection of hundreds of protocols, with more being added all the time
  • Live capture and offline analysis
  • Standard three-pane packet browser
  • Multi-platform: Runs on Windows, Linux, macOS, Solaris, FreeBSD, NetBSD, and many others
  • Captured network data can be browsed via a GUI, or via the TTY-mode TShark utility
  • The most powerful display filters in the industry
  • Rich VoIP analysis
  • Read/write many different capture file formats: tcpdump (libpcap), Pcap NG, Catapult DCT2000, Cisco Secure IDS iplog, Microsoft Network Monitor, Network General Sniffer (compressed and uncompressed), Sniffer Pro, and NetXray, Network Instruments Observer, NetScreen snoop, Novell LANalyzer, RADCOM WAN/LAN Analyzer, Shomiti/Finisar Surveyor, Tektronix K12xx, Visual Networks Visual UpTime, WildPackets EtherPeek/TokenPeek/AiroPeek, and many others
  • Capture files compressed with gzip can be decompressed on the fly
  • Live data can be read from Ethernet, IEEE 802.11, PPP/HDLC, ATM, Bluetooth, USB, Token Ring, Frame Relay, FDDI, and others (depending on your platform)
  • Decryption support for many protocols, including IPsec, ISAKMP, Kerberos, SNMPv3, SSL/TLS, WEP, and WPA/WPA2
  • Coloring rules can be applied to the packet list for quick, intuitive analysis
  • Output can be exported to XML, PostScript®, CSV, or plain text

What's New

The following vulnerabilities have been fixed:

  • wnpa-sec-2025-01 Bundle Protocol and CBOR dissector crash. Issue 20373.

The following bugs have been fixed:

  • Crash when sorting columns during capture with display filter active. Issue 20263.
  • OSS-Fuzz 384757274: Invalid-bool-value in dissect_tcp. Issue 20300.
  • Test failure in 4.4.2/4.4.3: test_sharkd_req_follow_http2. Issue 20330.
  • Regression in extcap interface toolbar. Issue 20354.
  • Clicking outside columns in TCP tab of Statistics → Conversations window causes crash. Issue 20357.
  • FTBFS with Ubuntu development (25.04) release. Issue 20359.
  • DNS enable_qname_stats crash Wireshark when QDCOUNT == 0. Issue 20367.
  • Windows: Android extcap plugin fails with "Broken socket connection" if there are no new packets for 2sec. Issue 20386.
  • TECMP: Calculation of lifecycle start in Status message is wrong. Issue 20387.
  • MQTT v5.0 properties total length presentation is incorrect. Issue 20389.
  • TShark doesn't resolve addresses in custom "hosts" files. Issue 20391.
  • Incorrect JA4 fingerprint with empty ciphers. Issue 20394.

Previous release notes

Bug Fixes

The following bugs have been fixed:

  • Potential mis-match in GSM MAP dissector for uncertainty radius and its filter key. Issue 20247.
  • Macro eNodeB ID and Extended Macro eNodeB ID not decoded by User Location Information. Issue 20276.
  • The NFSv2 Dissector appears to be swapping Character Special File and Directory in mode decoding. Issue 20290.
  • CMake discovers Strawberry Perl's zlib DLL when it shouldn't. Issue 20304.
  • VOIP Calls call flow displaying hours. Issue 20311.
  • Fuzz job issue: fuzz-2024-12-26-7898.pcap. Issue 20313.
  • sFlow: Incorrect length passed to header sample dissector. Issue 20320.
  • wsutil: Should link against -lm due to missing fabs() when built with -fno-builtin. Issue 20326.

New and Updated Features

New Protocol Support

  • There are no new protocols in this release.

Updated Protocol Support

  • ARTNET, ASN.1 PER, BACapp, BBLog, BT BR/EDR RF, CQL, Diameter, DOF, ECMP, FiveCo RAP, FTDI FT, GSM COMMON, GTPv2, HCI_MON, HSRP, HTTP2, ICMPv6, IEEE 802.11, Kafka, LTE RRC, MBIM, MMS, Modbus/TCP, MPEG PES, NAS-EPS, NFS, NGAP, NR RRC, PLDM, PN-DCP, POP, ProtoBuf, PTP, RLC, RPC, RTCP, sFlow, SIP, SRT, TCP, UCP, USBCCID, Wi-SUN, and ZigBee ZCL

New and Updated Capture File Support

  • CLLog EMS ERF
  • Updated File Format Decoding Support
  • There is no updated file format support in this release.

Security Enhancements

The Wireshark team continues to prioritize security, addressing vulnerabilities found in previous versions:

  • Fixed a FiveCo RAP dissector infinite loop vulnerability (wnpa-sec-2024-14).
  • Resolved an ECMP dissector crash issue (wnpa-sec-2024-15).
  • Wireshark 4.4.3 builds upon the improvements introduced in version 4.4.0:
  • Automatic Profile Switching: Users can now associate display filters with configuration profiles, allowing Wireshark to automatically switch profiles based on the opened capture file.
  • Enhanced Display Filters: Improved support for value strings and the ability to implement display filter functions as plugins.
  • Custom Columns and Output Fields: Users can define custom columns and output fields using any valid field expression, offering greater flexibility in data presentation.