CVE-2026-3608

EUVD-2026-15196
Sending a maliciously crafted message to the kea-ctrl-agent, kea-dhcp-ddns, kea-dhcp4, or kea-dhcp6 daemons over any configured API socket or HA listener can cause the receiving daemon to exit with a stack overflow error.
This issue affects Kea versions 2.6.0 through 2.6.4 and 3.0.0 through 3.0.2.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
iscCNA
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Affected Products (NVD)
VendorProductVersion
isckea
2.6.0 ≤
𝑥
≤ 2.6.4
isckea
3.0.0 ≤
𝑥
≤ 3.0.2
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
isc-kea
bookworm
vulnerable
forky
vulnerable
sid
3.0.3-1
fixed
trixie
vulnerable
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
isc-kea
bionic
needs-triage
focal
needs-triage
jammy
needs-triage
noble
needs-triage
questing
needs-triage
xenial
needs-triage
Common Weakness Enumeration
References
https://downloads.isc.org/isc/kea/2.6.5
https://downloads.isc.org/isc/kea/3.0.3
https://kb.isc.org/docs/cve-2026-3608
http://www.openwall.com/lists/oss-security/2026/03/25/6