CVE-2019-6473medium

CVE-2019-6473: medium-severity vulnerability in ISC Kea

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

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13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 6.5epss 1.2%
An invalid hostname option can trigger an assertion failure in the Kea DHCPv4 server process (kea-dhcp4), causing the server process to exit. Versions affected: 1.4.0 to 1.5.0, 1.6.0-beta1, and 1.6.0-beta2.
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
ISC · Kea
Related CVEs — ISC Kea

In the same product, most dangerous first.

CVE-2026-3608HIGHStack overflow in Kea daemonsEPSS 1.4%CVE-2019-6472MEDIUMA packet containing a malformed DUID can cause the kea-dhcp6 server to terminateEPSS 0.8%CVE-2019-6474MEDIUMA packet containing a malformed DUID can cause the kea-dhcp6 server to terminateEPSS 0.7%CVE-2025-40779HIGHKea crash upon interaction between specific client options and subnet selectionEPSS 0.5%CVE-2025-11232HIGHInvalid characters cause assertEPSS 0.4%CVE-2025-32801HIGHLoading a malicious hook library can lead to local privilege escalationEPSS 0.3%