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Fencer Vulns
medium 5.5

CVE-2019-5721 json

In Wireshark 2.4.0 to 2.4.11, the ENIP dissector could crash.

published 2019-01-08 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-15295

cvss
5.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 61%
public exploits
0
none known

Summary

In Wireshark 2.4.0 to 2.4.11, the ENIP dissector could crash. This was addressed in epan/dissectors/packet-enip.c by changing the memory-management approach so that a use-after-free is avoided.

Patch / fix

  • wireshark Debian 14, Debian 13, Debian 12 2.6.1-1

debian advisories DEBIAN-CVE-2019-5721

  • 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
  • wireshark SLES for SAP 12 SP4, SLES for SAP 12 SP3, SLES 12 SP4 +5 more 2.4.12-48.39.1
  • wireshark SLE Module for Desktop Applications 15, SLE Module for Basesystem 15 2.4.12-3.19.1

suse advisories SUSE-SU-2020:0693-1SUSE-SU-2019:0138-1SUSE-SU-2019:0130-1

  • 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
  • wireshark openSUSE Leap 15.0 2.4.12-lp150.2.19.1

opensuse advisories openSUSE-SU-2024:11513-1openSUSE-SU-2020:0362-1openSUSE-SU-2019:0092-1

  • wireshark Alpine 3.24, Alpine 3.23, Alpine 3.22 +13 more 2.6.6-r0
  • wireshark Alpine 3.8, Alpine 3.7 2.4.12-r0

alpine advisories ALPINE-CVE-2019-5721

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

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-2019-5721 updated cvss 7.5

wireshark: use-after-free in ENIP dissector results in denial of service

  • 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

0.95% chance of exploitation in the next 30 days, higher than 61% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • bugs.wireshark.org https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14470 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 5.5 CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/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.