VDB

CVE-2026-3608

CVE-2026-3608 PUBLISHED CVSS 7.5 HIGH

Stack overflow in Kea daemons

Reported by isc · Published March 25, 2026

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.

Fixed versions

Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.

PackageEcosystemFixed in
kea-keama-debuginfoerrata.rockylinux.org0:3.0.1-3.el10_1.x86_64, 0:3.0.1-3.el10_1.ppc64le, 0:3.0.1-3.el10_1.aarch64
kea-libserrata.rockylinux.org0:3.0.1-3.el10_1.x86_64, 0:3.0.1-3.el10_1.s390x, 0:3.0.1-3.el10_1.ppc64le, 0:3.0.1-3.el10_1.aarch64
kea-hooks-debuginfoerrata.rockylinux.org0:3.0.1-3.el10_1.x86_64, 0:3.0.1-3.el10_1.s390x, 0:3.0.1-3.el10_1.ppc64le, 0:3.0.1-3.el10_1.aarch64
kea-libs-debuginfoerrata.rockylinux.org0:3.0.1-3.el10_1.x86_64, 0:3.0.1-3.el10_1.s390x, 0:3.0.1-3.el10_1.ppc64le, 0:3.0.1-3.el10_1.aarch64
kea-docerrata.rockylinux.org0:3.0.1-3.el10_1.noarch
keaAlpine3.0.3-r0, 2.6.5-r0
kea-hookserrata.rockylinux.org0:3.0.1-3.el10_1.s390x, 0:3.0.1-3.el10_1.ppc64le, 0:3.0.1-3.el10_1.aarch64
kea-debuginfoerrata.rockylinux.org0:3.0.1-3.el10_1.x86_64, 0:3.0.1-3.el10_1.s390x, 0:3.0.1-3.el10_1.ppc64le, 0:3.0.1-3.el10_1.aarch64
kea-keamaerrata.rockylinux.org0:3.0.1-3.el10_1.x86_64, 0:3.0.1-3.el10_1.s390x, 0:3.0.1-3.el10_1.ppc64le, 0:3.0.1-3.el10_1.aarch64
kea-debugsourceerrata.rockylinux.org0:3.0.1-3.el10_1.x86_64, 0:3.0.1-3.el10_1.s390x, 0:3.0.1-3.el10_1.ppc64le, 0:3.0.1-3.el10_1.aarch64
keaerrata.rockylinux.org0:3.0.1-3.el10_1.x86_64, 0:3.0.1-3.el10_1.src, 0:3.0.1-3.el10_1.s390x, 0:3.0.1-3.el10_1.aarch64
KeaISC3.0.2, 2.6.4

Risk scores

CVSS 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

VendorProductVersions
ISCKea2.6.0, 3.0.0
Red HatRed Hat Enterprise Linux BaseOS EUS (v. 10.0)
Red HatRed Hat Enterprise Linux AppStream EUS (v. 10.0)
Red HatRed Hat Enterprise Linux BaseOS (v. 10)
Red HatRed Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)
alpinekea0, 0
Red HatRed Hat Enterprise Linux 10.0 Extended Update Support0:2.6.3-2.el10_0.3
Red HatRed Hat Enterprise Linux CodeReady Linux Builder (v. 10)
Red HatRed Hat Enterprise Linux AppStream (v. 10)
ISCKea2.6.0, 3.0.0
isckea2.6.0, 3.0.0
Red HatRed Hat Enterprise Linux 100:3.0.1-3.el10_1

Timeline

  • Mar 25, 2026 CVE Published
  • Mar 25, 2026 EPSS Score (30 in total, the first dated here)
  • Mar 25, 2026 Coalition ESS Score (2 in total, the first dated here)
  • Mar 25, 2026 PoC Published (9 in total, the first dated here)
  • Mar 29, 2026 Security Advisory (6 in total, the first dated here)
  • Apr 10, 2026 Distribution Patch (4 in total, the first dated here)
  • Jun 8, 2026 CVE Updated

Query this with the API

The same record, from the CLI:

vulnetix vdb vuln CVE-2026-3608
vulnetix vdb fixes CVE-2026-3608

Or with curl, using the org id and key from your account page:

curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
  "https://api.vdb.vulnetix.com/v2/vuln/CVE-2026-3608/fixes/registry"

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References

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