CVE-2023-2854

BLF file parser crash in Wireshark 4.0.0 to 4.0.5 and 3.6.0 to 3.6.13 allows denial of service...

5.3 MediumFix available

BLF file parser crash in Wireshark 4.0.0 to 4.0.5 and 3.6.0 to 3.6.13 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: Low
Integrity: Low
Availability: Low

Exploit likelihood

0.88%Up 0.8 points since May 27, 2023

What each source reports

CVE List Score used 5.3

BLF file parser crash in Wireshark 4.0.0 to 4.0.5 and 3.6.0 to 3.6.13 allows denial of service via crafted capture file

Record: CVE-2023-2854
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Weakness: CWE-787
Updated: 2026-11-02

EUVDEUVD-2023-34304 5.3

BLF file parser crash in Wireshark 4.0.0 to 4.0.5 and 3.6.0 to 3.6.13 allows denial of service via crafted capture file

Record: EUVD-2023-34304
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Updated: 2026-11-03

GitHub AdvisoriesGHSA-wf7c-7cm2-c3g5 5.3

BLF file parser crash in Wireshark 4.0.0 to 4.0.5 and 3.6.0 to 3.6.13 allows denial of service...

BLF file parser crash in Wireshark 4.0.0 to 4.0.5 and 3.6.0 to 3.6.13 allows denial of service via crafted capture file

Record: GHSA-wf7c-7cm2-c3g5
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Weakness: CWE-787
Updated: 2026-11-02

NVD 5.3

BLF file parser crash in Wireshark 4.0.0 to 4.0.5 and 3.6.0 to 3.6.13 allows denial of service via crafted capture file

Record: CVE-2023-2854
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness: CWE-787
Updated: 2026-11-02

OSV 5.3

BLF file parser crash in Wireshark 4.0.0 to 4.0.5 and 3.6.0 to 3.6.13 allows denial of service via crafted capture file

Record: CVE-2023-2854
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
Updated: 2026-11-02

OSVDEBIAN-CVE-2023-2854 6.5

BLF file parser crash in Wireshark 4.0.0 to 4.0.5 and 3.6.0 to 3.6.13 allows denial of service via crafted capture file

Record: DEBIAN-CVE-2023-2854
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2023-2854 5.3

BLF file parser crash in Wireshark 4.0.0 to 4.0.5 and 3.6.0 to 3.6.13 allows denial of service via crafted capture file

Record: UBUNTU-CVE-2023-2854
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVopenSUSE-SU-2024:12958-1 No score

libwireshark16-4.0.6-1.1 on GA media

These are all security issues fixed in the libwireshark16-4.0.6-1.1 package on the GA media of openSUSE Tumbleweed.

Record: openSUSE-SU-2024:12958-1
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` Debian:12	before 4.0.6-1~deb12u1, plus listed versions 4.0.3-14.0.5-1~exp1	4.0.6-1~deb12u1
`wireshark` Debian:13	before 4.0.6-1	4.0.6-1
`wireshark` Debian:14	before 4.0.6-1	4.0.6-1
`wireshark` Debian:12 From an advisory covering 14 CVEs	before 4.0.6-1~deb12u1, plus listed versions 4.0.3-14.0.5-1~exp1	4.0.6-1~deb12u1
`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` openSUSE:Tumbleweed From an advisory covering 7 CVEs	before 4.0.6-1.1	4.0.6-1.1

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	affected
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

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

In short

CVE-2023-2854 is a medium vulnerability (CVSS 5.3) in Wireshark, published May 26, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.88%, the 59th percentile. Fixed in wireshark 4.0.6-1~deb12u1.

References

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