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Fencer Vulns
high 7.5

CVE-2018-18225 json

In Wireshark 2.6.0 to 2.6.3, the CoAP dissector could crash.

published 2018-10-12 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-9962

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.9%
EPSS 2.9% chance of exploitation in 30 days, percentile 86%
public exploits
0
none known

Summary

In Wireshark 2.6.0 to 2.6.3, the CoAP dissector could crash. This was addressed in epan/dissectors/packet-coap.c by ensuring that the piv length is correctly computed.

Patch / fix

  • wireshark Debian 14, Debian 13, Debian 12 2.6.4-1

debian advisories DEBIAN-CVE-2018-18225

  • wireshark Ubuntu 14.04 LTS 2.6.4-2~ubuntu14.04.1
  • wireshark Ubuntu 16.04 LTS 2.6.4-2~ubuntu16.04.0
  • wireshark Ubuntu 18.04 LTS 2.6.4-2~ubuntu18.04.0

ubuntu advisories UBUNTU-CVE-2018-18225

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • wireshark SLES for SAP 15, SLES 15-LTSS, SLE Module for Desktop Applications 15 SP1 +3 more 3.2.2-3.35.2
  • spandsp SLES for SAP 15, SLES 15-LTSS, SLE Module for Desktop Applications 15 SP1 +3 more 0.0.6-3.2.1
  • libmaxminddb SLES for SAP 15, SLES 15-LTSS, SLE Module for Basesystem 15 SP1 +2 more 1.4.2-1.3.1

suse advisories SUSE-SU-2020:0693-1

  • wireshark openSUSE Tumbleweed 3.4.8-1.2
  • wireshark openSUSE Leap 15.1 3.2.2-lp151.2.9.1
  • spandsp openSUSE Leap 15.1 0.0.6-lp151.3.3.1
  • libmaxminddb openSUSE Leap 15.1 1.4.2-lp151.3.3.1

opensuse advisories openSUSE-SU-2024:11513-1openSUSE-SU-2020:0362-1

  • wireshark Alpine 3.24, Alpine 3.23, Alpine 3.22 +13 more 2.6.4-r0
  • wireshark Alpine 3.8, Alpine 3.7 2.4.10-r0

alpine advisories ALPINE-CVE-2018-18225

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • wireshark-cli Arch Linux 2.6.4-1

arch linux advisories AVG-779

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-18225 updated cvss 5.3

wireshark: CoAP dissector crash

  • Red Hat Enterprise Linux 5 wireshark Red Hat Enterprise Linux 6 wireshark, wireshark-gnome Red Hat Enterprise Linux 7 wireshark, wireshark-gnome Red Hat Enterprise Linux 8 wireshark, wireshark-cli
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.88% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.