Wireshark v4.6.7

Wireshark 4.6.7 Release Notes

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. If you use Wireshark professionally or you just want to learn more about protocol analysis, you should join us at SharkFest, the Wireshark developer and user conference. You can also become a Wireshark Certified Analyst! Official Wireshark training and certification are available from the Wireshark Foundation.

What’s New

Bug Fixes

The following vulnerabilities have been fixed:

• wnpa-sec-2026-52 Catapult DCT2000 protocol dissector crash. Issue 21270.
• wnpa-sec-2026-53 pcapng file parser crash. Issue 21285.
• wnpa-sec-2026-54 FMP/NOTIFY protocol dissector large loop. Issue 21347.
• wnpa-sec-2026-55 SSH protocol dissector crash. Issue 21378.
• wnpa-sec-2026-56 TLS ECH decryption crash. Issue 21390.
• wnpa-sec-2026-57 IEEE 802.11 protocol dissector crash. Issue 21391.
• wnpa-sec-2026-58 Z39.50 protocol dissector crash. Issue 21397.
• wnpa-sec-2026-59 UMTS FP protocol dissector crash. Issue 21398.
• wnpa-sec-2026-60 BLF file parser information disclosure. Issue 21361.
• wnpa-sec-2026-61 Multiple protocol dissector infinite loops. Issue 21275, Issue 21277, Issue 21330, Issue 21383.
• wnpa-sec-2026-62 DBS Etherwatch file parser crash. Issue 21352.
• wnpa-sec-2026-63 Ciscodump extcap crash. Issue 21375. The following bugs have been fixed:
• Wireshark appears in German when the system language is Dutch. Issue 20347.
• Qt: Capture filter combo box does not enforce minimum size or expanding size policy. Issue 21080.
• BACapp: Error parsing you-are request. Issue 21260.
• Use-After-Free in Ethernet POWERLINK (EPL) Dissector during profile loading error path. Issue 21267.
• Sponsor slides are not properly shown. Issue 21268.
• Buffer overlow/segfault in Catapult DCT2000 dissector via not check no_ddi_entries in header. Issue 21270.
• Fuzz job issue: fuzz-2026-05-24-14517548985.pcap. Issue 21272.
• Fuzz job UTF-8 encoding issue: fuzz-2026-06-07-14732586286.pcap. Issue 21331.
• Memory leak in alp-sample1.pcap. Issue 21343.
• Memory leak in nspi.pcap. Issue 21344.
• Heap-Buffer-Overflow in Wireshark Logcat Parser. Issue 21346.
• IPv6 Ping from Debian (among others) is dissected as "HiPerConTracer" Issue 21349.
• HEVC (H.265) dissector: bit_offset not advanced after sub_layer_hrd_parameters() causes false Malformed Packet. Issue 21362.
• dfilter_compile_full: heap-buffer-overflow READ in ws_strptime on a time literal. Issue 21376.
• Wireshark crashes with a HEAP_CORRUPTION error when using the last saved recent_common file. Issue 21379.
• Fuzz job issue: fuzz-2026-06-30-15106674620.pcap. Issue 21381.

New and Updated Features

• The Windows installers are now built with Visual Studio 2026.

New Protocol Support

There are no new protocols in this release.

Updated Protocol Support

ALC, BACapp, C2P, Catapult DCT2000, COTP, CSN.1, DCERPC, DCERPC MAPI, DCERPC NSPI, DNS, DVB-S2-TABLE, eDonkey, EPL, FC ELS, FMP/NOTIFY, H.265, HiPerConTracer, IEEE 802.11, LLS, MEGACO, MIH, MPEG DSM-CC, MS-WSP, RELOAD, SGP.32, SSH, STANAG 4607, UMTS FP, WOWW, and Z39.50

New and Updated Capture File Support

Android Logcat, BLF, DBS Etherwatch, Netlog, and pcapng

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 with the official installer) extcap binaries are now searched for under the libexec directory by default, e.g., /usr/libexec/wireshark/extcap instead of /usr/lib64/wireshark/extcap or similar. This is the customary place for helper binaries, which as opposed to libraries do not need multiarch support. The location can be overridden via the environment variable WIRESHARK_EXTCAP_DIR. The extcap binaries shipped with Wireshark are installed in the new location, but third party extcaps may need packaging changes. This change was effective in version 4.6.0, but was not explicitly noted in the release notes previously. Note that some distributions do not use a libexec directory, such as Alpine Linux, which does not have multilib support. On such systems extcap binaries should be in the same location as before.

Prior Versions

Wireshark 4.6.6 included the following changes.

See the release notes for details:

• wnpa-sec-2026-51 ROHC protocol dissector crash. Issue 21243.
• 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.

Wireshark 4.6.5 included the following changes.

See the release notes for details:

• wnpa-sec-2026-08 Monero dissector crash. Issue 21066. CVE-2026-5409.
• wnpa-sec-2026-09 BT-DHT dissector crash. Issue 21067. CVE-2026-5408.
• wnpa-sec-2026-10 FC-SWILS dissector crash. Issue 21070. CVE-2026-5406.
• wnpa-sec-2026-11 SMB2 dissector infinite loop. Issue 21073. CVE-2026-5407.
• wnpa-sec-2026-12 ICMPv6 dissector crash. Issue 21077. CVE-2026-5299.
• wnpa-sec-2026-13 AFP dissector crash. Issue 21088. CVE-2026-5401.
• wnpa-sec-2026-14 TLS dissector crash and possible code execution. Issue 21090. CVE-2026-5402.
• wnpa-sec-2026-15 K12 RF5 file parser crash. Issue 21094. CVE-2026-5404.
• wnpa-sec-2026-16 SBC codec crash and possible code execution. Issue 21103. CVE-2026-5403.
• wnpa-sec-2026-17 RDP dissector crash and possible code execution. Issue 21105. CVE-2026-5405.
• wnpa-sec-2026-18 AMR-NB codec crash. Issue 21111. CVE-2026-5654.
• wnpa-sec-2026-19 SDP dissector crash. Issue 2111. CVE-2026-5655.
• wnpa-sec-2026-20 iLBC audio codec crash. Issue 21113. CVE-2026-5657.
• wnpa-sec-2026-21 Profile import crash and possible code execution. Issue 21115. CVE-2026-5656.
• wnpa-sec-2026-22 DCP-ETSI protocol dissector crash. Issue 21122. CVE-2026-5653.
• wnpa-sec-2026-23 BEEP protocol dissector crash. Issue 21120. CVE-2026-6538.
• wnpa-sec-2026-24 ZigBee protocol dissector crash. Issue 21125. CVE-2026-6537.
• wnpa-sec-2026-25 DLMS/COSEM protcol dissector infinite loop. Issue 21065. CVE-2026-6536.
• wnpa-sec-2026-26 Dissection engine zlib decompression crash. Issue 21097, Issue 21098. CVE-2026-6535.
• wnpa-sec-2026-27 USB HID protocol dissector infinite loop. Issue 21121. CVE-2026-6534.
• wnpa-sec-2026-28 Dissection engine LZ77 decompression crash. Issue 21127. CVE-2026-6533.
• wnpa-sec-2026-29 Kismet protocol dissector crash. Issue 21129, Issue 21128. CVE-2026-6532.
• wnpa-sec-2026-30 SANE protocol dissector infinite loop. Issue 21139. CVE-2026-6531.
• wnpa-sec-2026-31 DCP-ETSI protocol dissector crash. Issue 21144. CVE-2026-6530.
• wnpa-sec-2026-32 iLBC audio codec crash. Issue 21145. CVE-2026-6529.
• wnpa-sec-2026-33 TLS dissector infinite loop. Issue 21151. CVE-2026-6528.
• wnpa-sec-2026-34 ASN.1 PER protocol dissector crash. Issue 21149. CVE-2026-6527.
• wnpa-sec-2026-35 RTSP protocol dissector crash. Issue 21173. CVE-2026-6526.
• wnpa-sec-2026-36 IEEE 802.11 protocol dissector crash. Issue 21008. CVE-2026-6525.
• wnpa-sec-2026-37 MySQL protocol dissector crash. Issue 21172. CVE-2026-6524.
• wnpa-sec-2026-38 GNW protocol dissector infinite loop. Issue 21177. CVE-2026-6523.
• wnpa-sec-2026-39 OpenFlow v5 protocol dissector infinite loops. Issue 21182, Issue 21188. CVE-2026-6521.
• wnpa-sec-2026-40 OpenFlow v6 protocol dissector infinite loop. Issue 21181. CVE-2026-6520.
• wnpa-sec-2026-41 MBIM dissector infinite loop. Issue 21184. CVE-2026-6519.
• wnpa-sec-2026-42 RPKI-Router protocol dissector infinite loop. Issue 21186. CVE-2026-6522.
• wnpa-sec-2026-43 GSM RP protocol dissector crash. Issue 21189. CVE-2026-6870.
• wnpa-sec-2026-44 WebSocket protocol dissector crash. Issue 21190. CVE-2026-6869.
• wnpa-sec-2026-45 SMB2 protocol dissector crash. Issue 21191.
• wnpa-sec-2026-46 HTTP protocol dissector crash. Issue 21185. CVE-2026-6868.
• wnpa-sec-2026-47 Sharkd utility memory leak. Issue 21214.
• wnpa-sec-2026-48 Sharkd utility crash. Issue 21206.
• wnpa-sec-2026-49 Sharkd utility crash. Issue 21207.
• wnpa-sec-2026-50 UDS protocol dissector infinite loop. Issue 21225.
• WSUG: Enabled Protocols dialog needs an update. Issue 20871.
• Build failure with Qt 6.11 beta. Issue 20965.
• BLF: Missing 4 byte alignment makes BLF files incompatible with Vector’s tools. Issue 21017.
• SMB2 decryption keys in smb2_seskey_list are not loaded on restart. Issue 21036.
• Fuzz job issue: fuzz-2026-03-01-13307044520.pcap. Issue 21049.
• Window with a message for ssh_strict_fopen. Issue 21051.
• IEEE 1722.1 Dissector for Stream Input Counters displays FRAMES_RX as "Stream Packets TX" Issue 21055.
• Wireshark 4.6.4 crashes. Issue 21058.
• Compilation error with Lua-5.5. Issue 21060.
• BSOD issue affecting Npcap 1.86. Issue 21062.
• Adding descriptions to BLF interfaces broke the Capture File Properties view. Issue 21069.
• Assertion Failure in ws_buffer_remove_start via Malformed Packet Manipulation. Issue 21078.
• Modbus/RTU fails to decode broadcast frames. Issue 21091.
• Lua not included unless CMake version >= 3.25. Issue 21093.
• sshdump: Regression in v4.6.4 – Failed to resolve hostname aliases from .ssh/config on Windows. Issue 21114.
• Fuzz job crash: fuzz-2026-03-25-13637733472.pcap. Issue 21117.
• dumpcap TCP@ section-header parsing remote heap corruption. Issue 21132.
• Netflix BBLog EVENT parsing crash. Issue 21133.
• On Windows, the Follow Stream feature output is shown in proportional font after zooming. Issue 21137.
• RTP Streams dialog Time of Day inconsistent behavior. Issue 21138.
• Sysdig Event Block Integer Underflow. Issue 21140.
• RF4CE NWK Dissector Heap Buffer Overflow (crash/OOB) Issue 21150.
• NetXray/Sniffer Padding Integer Underflow. Issue 21152.
• HTTP/2 ALTSVC/PRIORITY_UPDATE Frame Length Truncation (24-bit to 16-bit) Issue 21155.
• Snort config parser 2 buffer overflows. Issue 21165.
• ESP NULL Encryption Integer Underflow triggers Heap Overflow. Issue 21166.
• Heap buffer overflow in ISO 8583 dissector bin2hex() Issue 21171.
• wslua: NULL pointer dereference in get_dissector when passing an invalid GUID string to an FT_GUID table. Issue 21194.
• Fuzz job UTF-8 encoding issue: fuzz-2026-04-16-13947406035.pcap. Issue 21199.
• Qt: Waterfall bars misisng in conversation overview when "limit to display filter" is active. Issue 21204.
• text2pcap: heap-buffer-overflow in memmove when -P"dissector" payload exceeds reserved space. Issue 21208.
• text2pcap : Stack overflow via unbounded "g_alloca" in regex "seqno" Issue 21209.
• editcap: --novlan integer underflow in sll_remove_vlan_info causes denial of service on short SLL captures. Issue 21210.
• NAS-5GS - Mapping issue between IEI 0x7B and "S-NSSAI location validity information" IE. Issue 21218.
• RTP-MIDI dissector reports incorrect value for MTC Quarter Frame data. Issue 21231.

Wireshark 4.6.4 included the following changes.

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