CVE-2026-15165

Heap-based Buffer Overflow in Wireshark

5.5 MediumFix available

TLS ECH decryptor crash in Wireshark 4.6.0 to 4.6.6 allows denial of service

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

0.14%Unchanged since Jul 9, 2026

What each source reports

CVE List Score used 5.5

Heap-based Buffer Overflow in Wireshark

TLS ECH decryptor crash in Wireshark 4.6.0 to 4.6.6 allows denial of service

Record: CVE-2026-15165
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness: CWE-122
Updated: 2026-11-02

EUVDEUVD-2026-42412 5.5

TLS ECH decryptor crash in Wireshark 4.6.0 to 4.6.6 allows denial of service

Record: EUVD-2026-42412
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-3q2h-7599-7r76 5.5

TLS ECH decryptor crash in Wireshark 4.6.0 to 4.6.6 allows denial of service

TLS ECH decryptor crash in Wireshark 4.6.0 to 4.6.6 allows denial of service

Record: GHSA-3q2h-7599-7r76
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness: CWE-122
Updated: 2026-11-02

NVD 5.5

TLS ECH decryptor crash in Wireshark 4.6.0 to 4.6.6 allows denial of service

Record: CVE-2026-15165
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness: CWE-122
Updated: 2026-11-02

OSVALPINE-CVE-2026-15165 5.5

TLS ECH decryptor crash in Wireshark 4.6.0 to 4.6.6 allows denial of service

Record: ALPINE-CVE-2026-15165
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-06

OSV 5.5

Heap-based Buffer Overflow in Wireshark

TLS ECH decryptor crash in Wireshark 4.6.0 to 4.6.6 allows denial of service

Record: CVE-2026-15165
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness: CWE-122
Updated: 2026-11-02

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OSVDEBIAN-CVE-2026-15165 5.5

TLS ECH decryptor crash in Wireshark 4.6.0 to 4.6.6 allows denial of service

Record: DEBIAN-CVE-2026-15165
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2026-15165 5.5

TLS ECH decryptor crash in Wireshark 4.6.0 to 4.6.6 allows denial of service

Record: UBUNTU-CVE-2026-15165
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVMGASA-2026-0465 No score

Updated wireshark package fixes security vulnerabilities

Loop with Unreachable Exit Condition ('Infinite Loop') in Wireshark. (CVE-2026-15163) Heap-based Buffer Overflow in ciscodump. (CVE-2026-15164) Heap-based Buffer Overflow in Wireshark. (CVE-2026-15165) Stack-based Buffer Overflow in Wireshark. (CVE-2026-15166) Stack-based Buffer Overflow in Wireshark. (CVE-2026-15167) Use of Uninitialized Variable in Wireshark. (CVE-2026-15168) Heap-based Buffer Overflow in Wireshark. (CVE-2026-15169) Heap-based Buffer Overflow in Wireshark. (CVE-2026-15170) NULL Pointer Dereference in Wireshark. (CVE-2026-15171) Unchecked Input for Loop Condition in Wireshark. (CVE-2026-15172) Heap-based Buffer Overflow in Wireshark. (CVE-2026-15173) Heap-based Buffer Overflow in Wireshark. (CVE-2026-15174)

Record: MGASA-2026-0465
Updated: 2026-11-02

OSVopenSUSE-SU-2026:11460-1 No score

libwireshark19-4.6.7-3.1 on GA media

These are all security issues fixed in the libwireshark19-4.6.7-3.1 package on the GA media of openSUSE Tumbleweed.

Record: openSUSE-SU-2026:11460-1
Updated: 2026-11-02

OSVSUSE-SU-2026:3501-1 No score

Security update for wireshark

This update for wireshark fixes the following issues:

Update to version 4.6.7:

CVE-2026-5299: ICMPv6 dissector crash (bsc#1263757).
CVE-2026-5401: AFP dissector crash (bsc#1263756).
CVE-2026-5402: TLS dissector crash and possible code execution (bsc#1263755).
CVE-2026-5403: SBC audio codec crash (bsc#1263765).
CVE-2026-5404: K12 RF5 file parser crash (bsc#1263766).
CVE-2026-5405: RDP dissector crash (bsc#1263767).
CVE-2026-5406: FC-SWILS dissector crash (bsc#1263754).
CVE-2026-5407: SMB2 dissector infinite loop (bsc#1263753).
CVE-2026-5408: BT-DHT dissector crash (bsc#1263752).
CVE-2026-5409: Monero dissector crash (bsc#1263751).
CVE-2026-5653: DCP-ETSI dissector crash (bsc#1263750).
CVE-2026-5654: AMR-NB audio codec crash (bsc#1263749).
CVE-2026-5655: SDP dissector crash (bsc#1263748).
CVE-2026-5656: Profile import crash and possible code execution (bsc#1263809).
CVE-2026-5657: iLBC audio codec crash (bsc#1263747).
CVE-2026-6519: MBIM protocol dissector infinite loop (bsc#1263746).
CVE-2026-6520: OpenFlow v6 protocol dissector infinite loop (bsc#1263745).
CVE-2026-6521: OpenFlow v5 protocol dissector infinite loops (bsc#1263744).
CVE-2026-6522: RPKI-Router protocol dissector infinite loop (bsc#1263743).
CVE-2026-6523: GNW protocol dissector infinite loop (bsc#1263742).
CVE-2026-6524: MySQL protocol dissector crash (bsc#1263741).
CVE-2026-6525: IEEE 802.11 protocol dissector crash (bsc#1263810).
CVE-2026-6526: RTSP protocol dissector crash (bsc#1263740).
CVE-2026-6527: ASN.1 PER dissector crash (bsc#1263739).
CVE-2026-6528: TLS protocol dissector infinite loop (bsc#1263738).
CVE-2026-6529: iLBC audio codec crash (bsc#1263737).
CVE-2026-6530: DCP-ETSI protocol dissector crash (bsc#1263736).
CVE-2026-6531: SANE protocol dissector infinite loop (bsc#1263735).
CVE-2026-6532: Kismet protocol dissector crash (bsc#1263734).
CVE-2026-6533: Dissection engine LZ77 decompression crash (bsc#1263733).
CVE-2026-6534: USB HID dissector infinite loop (bsc#1263732).
CVE-2026-6535: Dissection engine zlib decompression crash (bsc#1263731).
CVE-2026-6536: DLMS/COSEM dissector infinite loop (bsc#1263730).
CVE-2026-6537: ZigBee dissector crash (bsc#1263729).
CVE-2026-6538: BEEP dissector crash (bsc#1263728).
CVE-2026-6867: SMB2 protocol dissector crash (bsc#1263727).
CVE-2026-6868: HTTP protocol dissector crash (bsc#1263762).
CVE-2026-6869: WebSocket protocol dissector crash (bsc#1263726).
CVE-2026-6870: GSM RP protocol dissector crash (bsc#1263725).
CVE-2026-7375: UDS protocol dissector infinite loop (bsc#1263761).
CVE-2026-7376: Sharkd utility crash (bsc#1263760).
CVE-2026-7378: Sharkd utility crash (bsc#1263759).
CVE-2026-7379: Sharkd utility memory leak (bsc#1263758).
CVE-2026-9759: ROHC protocol dissector crash (bsc#1266670).
CVE-2026-15163: Denial of Service via multiple protocol dissector infinite loops (bsc#1271133).
CVE-2026-15164: Denial of Service vulnerability in ciscodump (bsc#1271134).
CVE-2026-15165: Denial of Service via TLS ECH decryptor crash (bsc#1271135).
CVE-2026-15166: Denial of Service via IEEE 802.11 protocol dissector crash (bsc#1271136).
CVE-2026-15167: Denial of Service via DBS Etherwatch file parser crash (bsc#1271137).
CVE-2026-15168: BLF file parser allows possible information disclosure (bsc#1271138).
CVE-2026-15169: Denial of Service via UMTS FP protocol dissector crash (bsc#1271139).
CVE-2026-15170: Denial of service via Z39.50 protocol dissector crash (bsc#1271140).
CVE-2026-15171: Denial of service via SSH protocol dissector crash (bsc#1271141).
CVE-2026-15172: Denial of service via FMP/NOTIFY protocol dissector crash (bsc#1271142).
CVE-2026-15173: Denial of Service via pcapng file parser crash (bsc#1271143).
CVE-2026-15174: Denial of Service via Catapult DCT2000 protocol dissector crash (bsc#1271144).

Record: SUSE-SU-2026:3501-1
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`wireshark` Alpine:v3.24	4.6.0 up to 4.6.9-r0	4.6.9-r0
`wireshark` Debian:14	before 4.6.9-1, plus listed versions 4.4.7-14.4.8-0exp14.4.9-14.6.0-0exp14.6.0-1 Show 11 moreShow less 4.6.0~rc1-0exp14.6.0~rc1-0exp24.6.1-14.6.1-24.6.2-14.6.2-34.6.3-14.6.4-14.6.5-14.6.6-14.6.6-2	4.6.9-1
`wireshark` Mageia:10 From an advisory covering 12 CVEs	before 4.6.8-1.mga10	4.6.8-1.mga10
`wireshark` SUSE:Linux Enterprise Module for Basesystem 15 SP7 From an advisory covering 56 CVEs	before 4.6.7-150700.21.11.1	4.6.7-150700.21.11.1
`wireshark` SUSE:Linux Enterprise Module for Desktop Applications 15 SP7 From an advisory covering 56 CVEs	before 4.6.7-150700.21.11.1	4.6.7-150700.21.11.1
`wireshark` Ubuntu:Pro:14.04:LTS	All versions, plus listed versions 1.10.2-11.10.3-11.10.5-1ubuntu11.10.5-21.10.6-1 Show 9 moreShow less 1.12.1+g01b65bf-4+deb8u11ubuntu0.14.04.12.6.3-1~ubuntu14.04.12.6.4-2~ubuntu14.04.12.6.5-1~ubuntu14.04.12.6.6-1~ubuntu14.04.02.6.8-1~ubuntu14.04.0~esm12.6.10-1~ubuntu14.04.0~esm12.6.10-1~ubuntu14.04.0~esm22.6.10-1~ubuntu14.04.0~esm3	None known
`wireshark` Ubuntu:Pro:16.04:LTS	All versions, plus listed versions 1.12.7+g7fc8978-11.12.8+g5b6e543-22.0.1+g59ea380-3build12.0.2+ga16e22e-12.2.6+g32dac6a-2ubuntu0.16.04 Show 8 moreShow less 2.6.3-1~ubuntu16.04.12.6.4-2~ubuntu16.04.02.6.5-1~ubuntu16.04.02.6.6-1~ubuntu16.04.02.6.8-1~ubuntu16.04.02.6.10-1~ubuntu16.04.02.6.10-1~ubuntu16.04.0+esm12.6.10-1~ubuntu16.04.0+esm2	None known
`wireshark` Ubuntu:Pro:18.04:LTS	All versions, plus listed versions 2.4.2-12.4.3-12.4.4-12.4.5-12.6.3-1~ubuntu18.04.1 Show 7 moreShow less 2.6.4-2~ubuntu18.04.02.6.5-1~ubuntu18.04.02.6.6-1~ubuntu18.04.02.6.8-1~ubuntu18.04.02.6.10-1~ubuntu18.04.02.6.10-1~ubuntu18.04.0+esm12.6.10-1~ubuntu18.04.0+esm2	None known
`wireshark` Ubuntu:Pro:20.04:LTS	All versions, plus listed versions 3.0.5-13.0.7-13.2.1-13.2.2-13.2.3-13.2.3-1ubuntu0.1~esm13.2.3-1ubuntu0.1~esm2	None known
`wireshark` Ubuntu:Pro:22.04:LTS	All versions, plus listed versions 3.4.7-1~exp13.4.9-13.6.2-1ubuntu13.6.2-23.6.2-2ubuntu0.1~esm1	None known

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Affected packages
Package	Affected	Fixed
`wireshark` Ubuntu:24.04:LTS	All versions, plus listed versions 4.0.8-14.0.10-14.0.11-14.2.0-14.2.2-14.2.2-1.1build14.2.2-1.1build24.2.2-1.1build3	None known
`wireshark` Ubuntu:25.10	All versions, plus listed versions 4.4.5-14.4.6-24.4.6-2build14.4.7-1	None known
`wireshark` Ubuntu:26.10	All versions, plus listed versions 4.6.4-14.6.6-14.6.6-24.6.6-2build1	None known
`wireshark` Ubuntu:26.04:LTS	All versions, plus listed versions 4.4.7-14.6.0-14.6.1-24.6.2-34.6.3-14.6.4-1	None known
`wireshark` openSUSE:Tumbleweed From an advisory covering 13 CVEs	before 4.6.7-3.1	4.6.7-3.1

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected
Nov 6, 2026	affected, aliases, facts, references	OSV
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-15165 is a medium vulnerability (CVSS 5.5) in Wireshark, published July 8, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.14%, the 3rd percentile. Fixed in wireshark 4.6.9-r0.

References

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