Wireshark v4.6.8 release notes

Wireshark 4.6.8 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-2026-64 sharkd crash. Issue 21395.
wnpa-sec-2026-65 sharkd crash. Issue 21399.
wnpa-sec-2026-66 UMTS FP protocol dissector crash. Issue 21413.
wnpa-sec-2026-67 RDP protocol dissector crash. Issue 21396.
wnpa-sec-2026-68 TTX Logger file parser crash. Issue 21389.
wnpa-sec-2026-69 Dissection engine reassembly crash. Issue 21423.
wnpa-sec-2026-70 BUSMASTER file parser abnormal exit. Issue 21435.
wnpa-sec-2026-71 Tektronix K12xx file parser crash. Issue 21414.
wnpa-sec-2026-72 ERF file parser crash. Issue 21415.
wnpa-sec-2026-73 Bluetooth Attribute Protocol dissector crash. Issue 21424.
wnpa-sec-2026-74 Catapult DCT2000 file parser crash. Issue 21427.
wnpa-sec-2026-75 C12.22 protocol dissector crash. Issue 21439.
wnpa-sec-2026-76 CMS protocol dissector crash. Issue 21446.
wnpa-sec-2026-77 H.245 protocol dissector crash. Issue 21447.
wnpa-sec-2026-78 Kerberos protocol dissector crash. Issue 21449.
wnpa-sec-2026-79 Bluetooth HFP Profile protocol dissector crash. Issue 21451.
wnpa-sec-2026-80 Bluetooth BR/EDR FHS protocol dissector crash. Issue 21452.
wnpa-sec-2026-81 3gpp phone log file parser crash. Issue 21454.
wnpa-sec-2026-82 Ixia IxVeriWave and Vector Informatik BLF file parser crashes on Windows. Issue 21455.
wnpa-sec-2026-83 CMS protocol dissector crash. Issue 21457, Issue 21458.
wnpa-sec-2026-84 Pcapng file parser crash. Issue 21460.
wnpa-sec-2026-85 SSH protocol dissector crash. Issue 21465.
wnpa-sec-2026-86 ESS protocol dissector crash. Issue 21467.
wnpa-sec-2026-87 X.509IF protocol dissector crash. Issue 21469. CVE-2026-xxx.
wnpa-sec-2026-88 RRC protocol dissector crash. Issue 21478.
wnpa-sec-2026-89 C12.22 protocol dissector crash. Issue 21480.
wnpa-sec-2026-90 Gammu DCT3 trace file parser crash. Issue 21475.
wnpa-sec-2026-91 Bluetooth AVRCP Profile protocol dissector crash. Issue 21488. The following bugs have been fixed:
Fuzz job crash: randpkt-2026-05-22-14496207576.pcap. Issue 21266.
Wireshark Version 4.6.6 - File Capture Properties is excessively slow and hangs Wireshark on Windows. Issue 21337.
TCP Preference 'Analyze TCP sequence numbers' SEGFAULTs when toggled. Issue 21380.
Wireshark misdecodes S-NSSAI location validity information IE (5G NAS) Issue 21411.
Wireshark misdecodes NSAG information IE (5G NAS) Issue 21412.
Fuzz job UTF-8 encoding issue: fuzz-2026-07-17-15393056954.pcap. Issue 21419.
Wireshark misdecodes UE security capability IE (5G NAS) Issue 21431.
Wireshark misdecodes Registration wait range IE (5G NAS) Issue 21432.
Wireshark misdecodes Extended CAG information IE (5G NAS) Issue 21433.
Stack buffer overflow in K12/RF5 writer. Issue 21436.
Security issues fixed in 4.6.8 and 4.4.18 Tracker. Issue 21437.
BLF writer out-of-bounds read on truncated VLAN-tagged Ethernet frames. Issue 21441.
DLMS/COSEM compact-array TypeDescription recursion bypass can exhaust the stack. Issue 21442.
packet-knxip: Secure Wrapper size-offset causes NULL deref / SEGV when decrypting. Issue 21444.
wiretap/rtpdump: swapped caplen/len on truncated samples. Issue 21445.
H.245 returnedFunction nested GenericMessage dereferences NULL packet state. Issue 21447.
X.509 export-object tap dereferences missing certificate subject. Issue 21448.
Sniffer REC_HEADER2 error path over-reads stack buffer. Issue 21461.
Deep NetLog JSON nesting exhausts the native stack. Issue 21462.
androiddump signed btsnoop length causes global out-of-bounds read. Issue 21464.
ERF writer underflows payload length for tiny truncated packets. Issue 21466.
Wireshark misdecodes SOR transparent container IE (5G NAS) Issue 21472.
Unbounded Daintree timestamp fraction causes signed integer overflow. Issue 21473.
Wireshark misdecodes SOR-CMCI of SOR transparent container IE (5G NAS) Issue 21477.
Wireshark misdecodes Service level AA container (5GSM NAS) Issue 21479.

New and Updated Features

New Protocol Support

There are no new protocols in this release.

Updated Protocol Support

ANSI_TCAP, ASN.1 BER, ASTERIX, BT ATT, BT AVRCP, BT BR/EDR RF, BT HFP, C12.22, CIGI, CMS, COSEM, EBHSCR, ESS, FP, GSM SIM, GTPv2, H.245, Kerberos, KNX/IP, LBMSRS, NAS-5GS, RELOAD, Rlogin, RRC, SSH, X.509AF, and X.509IF

New and Updated Capture File Support

3gpp phone log, BLF, Busmaster, Catapult DCT2000, Daintree SNA, Endace ERF, Gammu DCT3, pcapng, RTPDump, Sniffer, Tektronix K12xx, and TTTech Computertechnik TTL

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 4.6.7 included the following changes.

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.
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.

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.