winget install --id WiresharkFoundation.WiresharkAbout Wireshark
Wireshark is the world's foremost network protocol analyzer. It lets you see what's happening on your network at a microscopic level. It is the de facto (and often de jure) standard across many industries and educational institutions. Wireshark development thrives thanks to the contributions of networking experts across the globe. It is the continuation of a project that started in 1998.
What's new in 4.6.6
Bug Fixes The following vulnerabilities have been fixed: - wnpa-sec-2026-51 ROHC protocol dissector crash. Issue 21243. The following bugs have been fixed: - Wireshark crashes when run under Visual Studio on Windows. Work item 24787. - Welcome page slide preferences are now available in the preferences window. - vwr: Read of uninitialized memory in pntoh16. Issue 16460. - vwr: Read of uninitialized memory in find_signature. Issue 16461. - Upgrades on Windows do not retain existing optional features unless explicitly requested, resulting in accidental removal of features. Issue 18925. - Wireshark.exe version 4.6.5 is twice as large as version 4.6.4. Issue 21233. - MACsec dissector global-buffer-overflow. Issue 21235. - Wireshark 4.6.5 does not run on Windows 10 version 1809 (including Server 2019 and some LTSC versions) Issue 21237. - Fuzz job issue: fuzz-2026-05-02-14184750352.pcap. Issue 21240. - packet-bacapp: rename aurth-request to auth-request. Issue 21246. - Fuzz job issue: randpkt-2026-05-10-14293434231.pcap. Issue 21253. New and Updated Features - The Windows installers now ship with Npcap 1.88. They previously shipped with Npcap 1.87. New Protocol Support There are no new protocols in this release. Updated Protocol Support BACapp, BPv7, DB/IB GDS DB, Kafka, MACsec, PFCP, RF4CE, ROHC, RTPS-VT, SAPHDB, and SIP New and Updated Capture File Support JSON and VeriWave New and Updated File Format Decoding Support There is no new or updated file format support in this release. Plugin Development Changes On UN*X systems (excluding macOS when running from an app bundle, as w...
Version history
| Version | Updated | Notes |
|---|---|---|
| 4.6.6 | Unknown | Bug Fixes The following vulnerabilities have been fixed: - wnpa-sec-2026-51 ROHC protocol dissector crash. Issue 21243. The following bugs have been fixed: - Wireshark crashes when run under Visual Studio on Windows. Wor... |
| 4.6.5 | Unknown | Bug Fixes This release fixes quite a few vulnerabilities. This is due to to a recent trend in AI-assisted vulnerability reports. - wnpa-sec-2026-08 Monero dissector crash. Issue 21066. CVE-2026-5409. - wnpa-sec-2026-09 B... |
| 4.6.4 | Unknown | Bug Fixes - wnpa-sec-2026-05 USB HID dissector memory exhaustion. Issue 20972. CVE-2026-3201. - wnpa-sec-2026-06 NTS-KE dissector crash. Issue 21000. CVE-2026-3202. - wnpa-sec-2026-07 RF4CE Profile dissector crash. Issue... |
| 4.6.3 | Unknown | Bug Fixes The following vulnerabilities have been fixed: - wnpa-sec-2026-01 BLF file parser crash. Issue 20880. - wnpa-sec-2026-02 IEEE 802.11 dissector crash. Issue 20939. - wnpa-sec-2026-03 SOME/IP-SD dissector crash.... |
| 4.6.2 | Unknown | Bug Fixes This release fixes an API/ABI change that was introduced in Wireshark 4.6.1, which caused a compatibility issue with plugins built for Wireshark 4.6.0. Issue 20881. The following vulnerabilities have been fixed... |
| 4.6.1 | Unknown | Bug Fixes - wnpa-sec-2025-05 BPv7 dissector crash. Issue 20770. - wnpa-sec-2025-06 Kafka dissector crash. Issue 20823. The following bugs have been fixed: - L2CAP dissector doesn’t understand retransmission mode. Issue 2... |
| 4.6.0 | Unknown | Release notes |
| 4.4.9 | Unknown | Bug Fixes The following bugs have been fixed: - RDM Product Detail List ID Disect incorrect. Issue 20612. - SCCP LUDT segmentation decoding fails. Issue 20647. - Ciscodump fails to start capture on Cisco IOS. Issue 20655... |
| 4.4.8 | Unknown | Bug Fixes The following bugs have been fixed: - Renegotiated DTLS session is not being decrypted. Issue 20362. - Wireshark is completely stuck in initialization because androiddump recv() is blocked. Issue 20526. - Fuzz... |
| 4.4.7 | Unknown | Bug Fixes The following vulnerabilities have been fixed: - wnpa-sec-2025-02 Dissection engine crash. Issue 20509. CVE-2025-5601. The following bugs have been fixed: - Wireshark does not correctly decode LIN "go to sleep"... |
| 4.4.6 | Unknown | Bug Fixes The following bugs have been fixed: - Bug in EtherCAT dissector with ECS order. Issue 13718. - Conversation dialog columns return to default width on each new packet in live capture. Issue 15978. - Tests fail i... |
| 4.4.5 | Unknown | Bug Fixes The following bugs have been fixed: - GRPC: protobuf_json only displays the truncated string value. Issue 20392. - Wireshark crashes when clicking on a column title/header. Issue 20403. New and Updated Features... |
| 4.4.3 | Unknown | No notes |
| 4.0.10.0 | Unknown | No notes |
| 4.0.8.0 | Unknown | No notes |
| 4.0.7.0 | Unknown | No notes |
| 4.0.6.0 | Unknown | No notes |
| 4.0.5.0 | Unknown | No notes |
| 4.0.4.0 | Unknown | No notes |
| 4.0.3.0 | Unknown | No notes |