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Fencer Intel
high 7.5

CVE-2026-3608 json

Stack overflow in Kea daemons

published 7mo ago modified 3mo ago also EUVD-2026-15196

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.4%
EPSS 1.4% chance of exploitation in 30 days, percentile 72%
public exploits
0
none known

Summary

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.

Patch / fix

  • Red Hat Red Hat Enterprise Linux 10 0:3.0.1-3.el10_1
  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 0:2.6.3-2.el10_0.3
  • isc-kea Debian 13 2.6.3-1+deb13u1
  • isc-kea Debian 14 3.0.3-1

debian advisories DEBIAN-CVE-2026-3608

  • isc-kea Ubuntu 24.04 LTS 2.4.1-3ubuntu0.2
  • isc-kea Ubuntu 25.10 2.6.3-2ubuntu0.1

ubuntu advisories UBUNTU-CVE-2026-3608

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

  • kea RHEL 10.1 3.0.1-3.el10_1
  • kea-libs RHEL 10.1 3.0.1-3.el10_1
  • kea-hooks RHEL 10.1 3.0.1-3.el10_1
  • kea-keama RHEL 10.1 3.0.1-3.el10_1
  • kea enterprise linux eus 10.0 2.6.3-2.el10_0.3
  • kea-libs enterprise linux eus 10.0 2.6.3-2.el10_0.3
  • kea-hooks enterprise linux eus 10.0 2.6.3-2.el10_0.3
  • kea-keama enterprise linux eus 10.0 2.6.3-2.el10_0.3

red hat advisories RHSA-2026:11344RHSA-2026:7342

  • kea SLE Module for Server Applications 15 SP7, SLE Module for Basesystem 15 SP7 2.6.5-150700.3.6.1
  • kea SLES for SAP applications 16.0, SLES 16.0 3.0.3-160000.1.1
  • kea SLES for SAP 15 SP6, SLES 15 SP6-LTSS 2.6.5-150600.13.9.1

suse advisories SUSE-SU-2026:1548-1SUSE-SU-2026:1378-1SUSE-SU-2026:20989-1

  • kea openSUSE Leap 16.0 3.0.3-160000.1.1
  • kea openSUSE Tumbleweed 3.0.3-1.1

opensuse advisories openSUSE-SU-2026:20452-1openSUSE-SU-2026:10421-1

  • kea Rocky Linux 10 3.0.1-3.el10_1

rocky linux advisories RLSA-2026:7342

  • kea Alpine 3.22 2.6.5-r0
  • kea Alpine 3.24, Alpine 3.23 3.0.3-r0

alpine advisories ALPINE-CVE-2026-3608

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

Is CVE-2026-3608 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.

Check with Fencer

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-2026-3608 updated cvss 7.5

Kea: Kea: Denial of Service via maliciously crafted message

  • Red Hat Enterprise Linux AppStream (v. 10) kea-hooks 3.0.1-3.el10_1
    fixed: vendor fix RHSA-2026:7342
  • Red Hat Enterprise Linux AppStream EUS (v. 10.0) kea-hooks 2.6.3-2.el10_0.3
    fixed: vendor fix RHSA-2026:11344
  • Red Hat Enterprise Linux BaseOS (v. 10) kea 3.0.1-3.el10_1, kea-libs 3.0.1-3.el10_1
    fixed: vendor fix RHSA-2026:7342
  • Red Hat Enterprise Linux BaseOS EUS (v. 10.0) kea 2.6.3-2.el10_0.3, kea-libs 2.6.3-2.el10_0.3
    fixed: vendor fix RHSA-2026:11344
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) kea-keama 3.0.1-3.el10_1
    fixed: vendor fix RHSA-2026:7342
  • Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) kea-keama 2.6.3-2.el10_0.3
    fixed: vendor fix RHSA-2026:11344

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

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
7mo ago

Exploit prediction

1.39% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

  • ISC Kea
  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support

Classification

Weakness

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.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.