A packet containing a malformed DUID can cause the kea-dhcp6 server to terminate

published 2019-10-16 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-16032

cvss: 6.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.8%; EPSS 0.8% chance of exploitation in 30 days, percentile 56%
public exploits: 0; none known

A packet containing a malformed DUID can cause the Kea DHCPv6 server process (kea-dhcp6) to exit due to an assertion failure. Versions affected: 1.4.0 to 1.5.0, 1.6.0-beta1, and 1.6.0-beta2.

Patch / fix

distros 3

debian alpine arch linux

isc-kea Debian 14, Debian 13, Debian 12 1.7.5-1

debian advisories DEBIAN-CVE-2019-6472

kea Alpine 3.24, Alpine 3.23, Alpine 3.22 +11 more 1.7.2-r0

alpine advisories ALPINE-CVE-2019-6472

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

kea Arch Linux 1.8.0-1

arch linux advisories AVG-1032

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-2019-6472 updated 2025-11-21 cvss 6.5

kea: packet containing a malformed DUID

Red Hat All currently supported Red Hat products
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

0.80% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.5	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD	3.1	6.5	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD	2.0	3.3	AV:A/AC:L/Au:N/C:N/I:N/A:P

Affected products

ISC Kea

Classification

Weakness

CWE-617 Reachable Assertion

References

kb.isc.org /docs/cve-2019-6472
vendor-advisory

Sources

CVE List CVE-2019-6472
NVD CVE-2019-6472

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.

Summary