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Fencer Intel
medium 5.5

CVE-2019-5716 json

In Wireshark 2.6.0 to 2.6.5, the 6LoWPAN dissector could crash.

published 7y ago modified 4mo ago also EUVD-2019-15290

cvss
5.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.4%
EPSS 1.4% chance of exploitation in 30 days, percentile 73%
public exploits
0
none known

Summary

In Wireshark 2.6.0 to 2.6.5, the 6LoWPAN dissector could crash. This was addressed in epan/dissectors/packet-6lowpan.c by avoiding use of a TVB before its creation.

Patch / fix

  • wireshark Debian 14, Debian 13, Debian 12 2.6.6-1

debian advisories DEBIAN-CVE-2019-5716

  • wireshark Ubuntu 14.04 LTS 2.6.6-1~ubuntu14.04.0
  • wireshark Ubuntu 16.04 LTS 2.6.6-1~ubuntu16.04.0
  • wireshark Ubuntu 18.04 LTS 2.6.6-1~ubuntu18.04.0

ubuntu advisories UBUNTU-CVE-2019-5716

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-cli Arch Linux 2.6.6-1

arch linux advisories AVG-844

Is CVE-2019-5716 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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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-2019-5716 updated cvss 3.3

wireshark: reachable assertion in fast_ensure_contiguous() from 6LoWPAN dissector

  • Red Hat Enterprise Linux 8 wireshark, wireshark-cli
    affected: no fix available “Fix deferred”
  • Red Hat Enterprise Linux 5 wireshark Red Hat Enterprise Linux 6 wireshark, wireshark-gnome Red Hat Enterprise Linux 7 wireshark, wireshark-gnome
    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

1.42% chance of exploitation in the next 30 days, higher than 73% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • bugs.wireshark.org https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15217 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
  • CWE-20 Improper Input Validation

References

Sources

Fencer Intel 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.