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Fencer Vulns
high 7.5

CVE-2026-3608 json

Stack overflow in Kea daemons

published 2026-03-25 7 mo ago modified 2026-07-15 3 mo 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

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
7 mo ago

Exploit prediction

1.39% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-08).

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 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.