CVE-2023-6175

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') in Wireshark

7.8 HighFix available

NetScreen file parser crash in Wireshark 4.0.0 to 4.0.10 and 3.6.0 to 3.6.18 allows denial of service via crafted capture file

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: High
Integrity: High
Availability: High

Exploit likelihood

3.46%Up 3.4 points since Mar 26, 2024

What each source reports

CVE List Score used 7.8

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') in Wireshark

NetScreen file parser crash in Wireshark 4.0.0 to 4.0.10 and 3.6.0 to 3.6.18 allows denial of service via crafted capture file

Record: CVE-2023-6175
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-120
Updated: 2026-11-02

EUVDEUVD-2023-58425 7.8

NetScreen file parser crash in Wireshark 4.0.0 to 4.0.10 and 3.6.0 to 3.6.18 allows denial of service via crafted capture file

Record: EUVD-2023-58425
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-r8r7-4wvf-px33 7.8

NetScreen file parser crash in Wireshark 4.0.0 to 4.0.10 and 3.6.0 to 3.6.18 allows denial of...

NetScreen file parser crash in Wireshark 4.0.0 to 4.0.10 and 3.6.0 to 3.6.18 allows denial of service via crafted capture file

Record: GHSA-r8r7-4wvf-px33
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-120
Updated: 2026-11-02

NVD 7.8

NetScreen file parser crash in Wireshark 4.0.0 to 4.0.10 and 3.6.0 to 3.6.18 allows denial of service via crafted capture file

Record: CVE-2023-6175
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-120
Updated: 2026-11-02

OSVALPINE-CVE-2023-6175 7.8

NetScreen file parser crash in Wireshark 4.0.0 to 4.0.10 and 3.6.0 to 3.6.18 allows denial of service via crafted capture file

Record: ALPINE-CVE-2023-6175
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-03

OSVAZL-42527 7.8

CVE-2023-6175 affecting package wireshark 4.0.8-1

NetScreen file parser crash in Wireshark 4.0.0 to 4.0.10 and 3.6.0 to 3.6.18 allows denial of service via crafted capture file

Record: AZL-42527
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-02

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OSVAZL-42552 7.8

CVE-2023-6175 affecting package wireshark for versions less than 4.4.7-1

NetScreen file parser crash in Wireshark 4.0.0 to 4.0.10 and 3.6.0 to 3.6.18 allows denial of service via crafted capture file

Record: AZL-42552
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSV 7.8

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') in Wireshark

NetScreen file parser crash in Wireshark 4.0.0 to 4.0.10 and 3.6.0 to 3.6.18 allows denial of service via crafted capture file

Record: CVE-2023-6175
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness: CWE-120
Updated: 2026-11-02

OSVDEBIAN-CVE-2023-6175 7.8

NetScreen file parser crash in Wireshark 4.0.0 to 4.0.10 and 3.6.0 to 3.6.18 allows denial of service via crafted capture file

Record: DEBIAN-CVE-2023-6175
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVOESA-2023-1847 6.6

wireshark security update

Wireshark is an open source tool for profiling network traffic and analyzing packets. Such a tool is often referred to as a network analyzer, network protocol analyzer or sniffer.

Security Fix(es):

A heap-based buffer overflow was found in Wireshark's NetScreen file parser. This issue may allow local arbitrary code execution via a crafted capture file.(CVE-2023-6175)

Record: OESA-2023-1847
CVSS 3.1: 6.6 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2023-6175 7.8

NetScreen file parser crash in Wireshark 4.0.0 to 4.0.10 and 3.6.0 to 3.6.18 allows denial of service via crafted capture file

Record: UBUNTU-CVE-2023-6175
CVSS 3.1: 7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVCLSA-2026-1775032927 No score

wireshark: Fix of 11 CVEs

CVE-2023-6175: fix heap buffer overflow in NetScreen file parser
CVE-2024-0208: fix crash in GVCP dissector due to NULL string
CVE-2024-0209: fix uncontrolled recursion in ASN.1 dissectors
CVE-2024-0211: fix infinite loop in DOCSIS dissector
CVE-2024-2955: fix use-after-free in T.38 dissector
CVE-2024-8250: fix stack buffer overflow in NTLMSSP dissector
CVE-2024-9781: fix crash in AppleTalk and RELOAD Framing dissectors
CVE-2024-11596: fix buffer overflow in ECMP dissector
CVE-2024-24476: fix heap buffer overflow in address resolution
CVE-2024-24478: fix integer overflow in BGP dissector
CVE-2025-5601: fix crash in column prepend fence handling

Record: CLSA-2026-1775032927
Updated: 2026-11-02

OSVCLSA-2026-1775039763 No score

wireshark: Fix of 11 CVEs

CVE-2023-6175: fix heap buffer overflow in NetScreen file parser
CVE-2024-0208: fix crash in GVCP dissector due to NULL string
CVE-2024-0209: fix uncontrolled recursion in ASN.1 dissectors
CVE-2024-0211: fix infinite loop in DOCSIS dissector
CVE-2024-2955: fix use-after-free in T.38 dissector
CVE-2024-8250: fix stack buffer overflow in NTLMSSP dissector
CVE-2024-9781: fix crash in AppleTalk and RELOAD Framing dissectors
CVE-2024-11596: fix buffer overflow in ECMP dissector
CVE-2024-24476: fix heap buffer overflow in address resolution
CVE-2024-24478: fix integer overflow in BGP dissector
CVE-2025-5601: fix crash in column prepend fence handling

Record: CLSA-2026-1775039763
Updated: 2026-11-02

OSVMGASA-2024-0045 No score

Updated wireshark packages fix security vulnerabilities

The updated packages fix security vulnerabilities: RTPS dissector memory leak. (CVE-2023-5371) SSH dissector invalid read of memory blocks. (CVE-2023-6174) NetScreen File Parsing Heap-based Buffer Overflow. (CVE-2023-6175) GVCP dissector crash via packet injection or crafted capture file. (CVE-2024-0208)

Record: MGASA-2024-0045
Updated: 2026-11-02

OSVopenSUSE-SU-2024:13458-1 No score

libwireshark16-4.0.11-2.1 on GA media

These are all security issues fixed in the libwireshark16-4.0.11-2.1 package on the GA media of openSUSE Tumbleweed.

Record: openSUSE-SU-2024:13458-1
Updated: 2026-11-02

OSVSUSE-SU-2023:4938-1 No score

Security update for wireshark

This update for wireshark fixes the following issues:

Update to 3.6.19:

CVE-2023-6175: NetScreen file parser crash (bsc#1217272).

Record: SUSE-SU-2023:4938-1
Updated: 2026-11-02

OSVSUSE-SU-2024:3165-1 No score

Security update for wireshark

This update for wireshark fixes the following issues:

wireshark was updated from version 3.6.23 to version 4.2.6 (jsc#PED-8517):

Security issues fixed with this update:
- CVE-2024-0207: HTTP3 dissector crash (bsc#1218503)
- CVE-2024-0210: Zigbee TLV dissector crash (bsc#1218506)
- CVE-2024-0211: DOCSIS dissector crash (bsc#1218507)
- CVE-2023-6174: Fixed SSH dissector crash (bsc#1217247)
- CVE-2023-6175: NetScreen file parser crash (bsc#1217272)
- CVE-2023-5371: RTPS dissector memory leak (bsc#1215959)
- CVE-2023-3649: iSCSI dissector crash (bsc#1213318)
- CVE-2023-2854: BLF file parser crash (bsc#1211708)
- CVE-2023-0666: RTPS dissector crash (bsc#1211709)
- CVE-2023-0414: EAP dissector crash (bsc#1207666)
Major changes introduced with versions 4.2.0 and 4.0.0:
- Version 4.2.0 https://www.wireshark.org/docs/relnotes/wireshark-4.2.0.html
- Version 4.0.0 https://www.wireshark.org/docs/relnotes/wireshark-4.0.0.html
Added an aditional desktopfile to start wireshark which asks for the super user password.

Record: SUSE-SU-2024:3165-1
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`wireshark` Alpine:v3.18	3.6.0 up to 4.0.11-r0	4.0.11-r0
`wireshark` Alpine:v3.19	3.6.0 up to 4.0.11-r0	4.0.11-r0
`wireshark` Alpine:v3.20	3.6.0 up to 4.0.11-r0	4.0.11-r0
`wireshark` Alpine:v3.21	3.6.0 up to 4.0.11-r0	4.0.11-r0
`wireshark` Alpine:v3.22	3.6.0 up to 4.0.11-r0	4.0.11-r0
`wireshark` Alpine:v3.23	3.6.0 up to 4.0.11-r0	4.0.11-r0
`wireshark` Alpine:v3.24	3.6.0 up to 4.0.11-r0	4.0.11-r0
`wireshark` Azure Linux:2	through 4.0.8-1	None known
`wireshark` Azure Linux:3	before 4.4.7-1	4.4.7-1
`wireshark` TuxCare:AlmaLinux:9.6 From an advisory covering 11 CVEs	before 1:3.4.10-7.el9_6.tuxcare.els2	1:3.4.10-7.el9_6.tuxcare.els2

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Affected packages
Package	Affected	Fixed
`wireshark-cli` TuxCare:AlmaLinux:9.6 From an advisory covering 11 CVEs	before 1:3.4.10-7.el9_6.tuxcare.els2	1:3.4.10-7.el9_6.tuxcare.els2
`wireshark-devel` TuxCare:AlmaLinux:9.6 From an advisory covering 11 CVEs	before 1:3.4.10-7.el9_6.tuxcare.els2	1:3.4.10-7.el9_6.tuxcare.els2
`wireshark` TuxCare:AlmaLinux:9.2 From an advisory covering 11 CVEs	before 1:3.4.10-4.el9.tuxcare.els3	1:3.4.10-4.el9.tuxcare.els3
`wireshark-cli` TuxCare:AlmaLinux:9.2 From an advisory covering 11 CVEs	before 1:3.4.10-4.el9.tuxcare.els3	1:3.4.10-4.el9.tuxcare.els3
`wireshark-devel` TuxCare:AlmaLinux:9.2 From an advisory covering 11 CVEs	before 1:3.4.10-4.el9.tuxcare.els3	1:3.4.10-4.el9.tuxcare.els3
`wireshark` Debian:12	before 4.0.11-1~deb12u1, plus listed versions 4.0.10-14.0.3-14.0.5-1~exp14.0.6-14.0.6-1~deb12u14.0.6-1~exp14.0.7-14.0.8-1	4.0.11-1~deb12u1
`wireshark` Debian:13	before 4.0.11-1	4.0.11-1
`wireshark` Debian:14	before 4.0.11-1	4.0.11-1
`wireshark` Debian:10 From an advisory covering 4 CVEs	before 2.6.20-0+deb10u8, plus listed versions 2.6.10-12.6.20-0+deb10u12.6.20-0+deb10u22.6.20-0+deb10u32.6.20-0+deb10u4 Show 5 moreShow less 2.6.20-0+deb10u52.6.20-0+deb10u62.6.20-0+deb10u72.6.8-1.12.6.9-1	2.6.20-0+deb10u8
`wireshark` Debian:11 From an advisory covering 47 CVEs	before 3.4.16-0+deb11u1, plus listed versions 3.4.10-0+deb11u13.4.4-13.4.6-1~exp13.4.7-13.4.7-1~exp13.4.8-13.4.9-1	3.4.16-0+deb11u1
`wireshark` Debian:12 From an advisory covering 9 CVEs	before 4.0.11-1~deb12u1, plus listed versions 4.0.10-14.0.3-14.0.5-1~exp14.0.6-14.0.6-1~deb12u14.0.6-1~exp14.0.7-14.0.8-1	4.0.11-1~deb12u1
`wireshark` Mageia:9 From an advisory covering 4 CVEs	before 4.0.12-1.mga9	4.0.12-1.mga9
`wireshark` openEuler:20.03-LTS-SP1	before 3.6.14-5.oe1	3.6.14-5.oe1
`wireshark` openEuler:20.03-LTS-SP3	before 3.6.14-5.oe1	3.6.14-5.oe1
`wireshark` openEuler:22.03-LTS	before 3.6.14-5.oe2203sp2	3.6.14-5.oe2203sp2
`wireshark` openEuler:22.03-LTS-SP1	before 3.6.14-5.oe2203sp1	3.6.14-5.oe2203sp1
`wireshark` openEuler:22.03-LTS-SP2	before 3.6.14-5.oe2203sp2	3.6.14-5.oe2203sp2
`wireshark` SUSE:Linux Enterprise Module for Basesystem 15 SP4	before 3.6.19-150000.3.106.1	3.6.19-150000.3.106.1
`wireshark` SUSE:Linux Enterprise Module for Basesystem 15 SP5	before 3.6.19-150000.3.106.1	3.6.19-150000.3.106.1
`wireshark` SUSE:Linux Enterprise Module for Desktop Applications 15 SP4	before 3.6.19-150000.3.106.1	3.6.19-150000.3.106.1
`wireshark` SUSE:Linux Enterprise Module for Desktop Applications 15 SP5	before 3.6.19-150000.3.106.1	3.6.19-150000.3.106.1
`wireshark` openSUSE:Leap 15.4	before 3.6.19-150000.3.106.1	3.6.19-150000.3.106.1
`wireshark` openSUSE:Leap 15.5	before 3.6.19-150000.3.106.1	3.6.19-150000.3.106.1
`wireshark` SUSE:Linux Enterprise Module for Basesystem 15 SP6 From an advisory covering 11 CVEs	before 4.2.6-150600.18.6.1	4.2.6-150600.18.6.1
`wireshark` SUSE:Linux Enterprise Module for Desktop Applications 15 SP6 From an advisory covering 11 CVEs	before 4.2.6-150600.18.6.1	4.2.6-150600.18.6.1
`wireshark` openSUSE:Leap 15.6 From an advisory covering 11 CVEs	before 4.2.6-150600.18.6.1	4.2.6-150600.18.6.1
`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
`wireshark` openSUSE:Tumbleweed From an advisory covering 2 CVEs	before 4.0.11-2.1	4.0.11-2.1

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	affected, aliases, 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-2023-6175 is a high vulnerability (CVSS 7.8) in Wireshark, published November 19, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.46%, the 89th percentile. Fixed in wireshark 4.0.11-r0.

References

Show 35 moreShow less