PT-2026-27643 · Kea-Dhcp4+3 · Kea-Dhcp4+4

Published 2026-01-01 · Updated 2026-04-22 · CVE-2026-3608

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Kea versions 2.6.0 through 2.6.4 Kea versions 3.0.0 through 3.0.2

Description A specially crafted message sent to the kea-ctrl-agent, kea-dhcp-ddns, kea-dhcp4, or kea-dhcp6 daemons via an API socket or HA listener can lead to a stack overflow error, causing the daemon to terminate. This could result in a denial-of-service condition.

Recommendations Update Kea to version 2.6.5 or 3.0.3.

Fix

DoS

Assertion Failure

Weakness Enumeration

CWE-617

Related Identifiers

ALSA-2026:7342

CVE-2026-3608

OPENSUSE-SU-2026:10421-1

OPENSUSE-SU-2026:20452-1

RHSA-2026:11344

RHSA-2026:7342

SUSE-SU-2026:1378-1

SUSE-SU-2026:1548-1

SUSE-SU-2026:20989-1

Affected Products

Kea

Kea-Ctrl-Agent

Kea-Dhcp-Ddns

Kea-Dhcp4

Kea-Dhcp6

References · 37

• https://osv.dev/vulnerability/SUSE-SU-2026:1378-1 · Vendor Advisory
• https://downloads.isc.org/isc/kea/3.0.3 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-3608 · Vendor Advisory
• https://osv.dev/vulnerability/ALSA-2026:7342 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-3608 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2026-3608 · Vendor Advisory
• https://kb.isc.org/docs/cve-2026-3608 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-3608 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2026:1548-1 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-3608 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-3608 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2026:20452-1 · Vendor Advisory
• https://errata.almalinux.org/10/ALSA-2026-7342.html · Vendor Advisory
• https://osv.dev/vulnerability/ALPINE-CVE-2026-3608 · Vendor Advisory
• https://downloads.isc.org/isc/kea/2.6.5 · Patch