Vulnerability-Lookup

CVE-2026-3608 (GCVE-0-2026-3608)

Vulnerability from cvelistv5 – Published: 2026-03-25 08:46 – Updated: 2026-07-15 01:02

Title

Stack overflow in Kea daemons

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.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-25 13:26 UTC

CWE

CWE-617 - Reachable Assertion

Assigner

isc mitre root

References

9 references

URL	Tags
https://kb.isc.org/docs/cve-2026-3608	vendor-advisory
https://downloads.isc.org/isc/kea/2.6.5	patch
https://downloads.isc.org/isc/kea/3.0.3	patch
http://www.openwall.com/lists/oss-security/2026/03/25/6
https://access.redhat.com/security/cve/CVE-2026-3608	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2451139	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:11344	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:7342	vendor-advisoryx_refsource_REDHAT

Impacted products

3 products

Vendor	Product	Version
ISC	Kea	Affected: 2.6.0 , ≤ 2.6.4 (custom) Affected: 3.0.0 , ≤ 3.0.2 (custom) cpe:2.3:a:isc:kea:::::::: cpe:2.3:a:isc:kea::::::::
Red Hat	Red Hat Enterprise Linux 10	Unaffected: 0:3.0.1-3.el10_1 , < * (rpm) cpe:/o:redhat:enterprise_linux:10.1
Red Hat	Red Hat Enterprise Linux 10.0 Extended Update Support	Unaffected: 0:2.6.3-2.el10_0.3 , < * (rpm) cpe:/o:redhat:enterprise_linux_eus:10.0

Date Public

2026-03-25 00:00

Credits

ISC would like to thank Ali Norouzi of Keysight for bringing this vulnerability to our attention.

Show details on NVD website

JSON

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WID-SEC-W-2026-0887

Vulnerability from csaf_certbund - Published: 2026-03-26 23:00 - Updated: 2026-06-08 22:00

Summary

Internet Systems Consortium Kea: Schwachstelle ermöglicht Denial of Service

Severity

Mittel

Notes

Das BSI ist als Anbieter für die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch dafür verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgfältig im Einzelfall zu prüfen.

Produktbeschreibung: Internet Systems Consortium (ISC) Kea ist eine Open-Source-DHCP-Server-Implementierung.

Angriff: Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Internet Systems Consortium Kea ausnutzen, um einen Denial of Service Angriff durchzuführen.

Betroffene Betriebssysteme: - Linux - UNIX

CVE-2026-3608

Affected products

Known affected 9 products

Product	Identifier	Version
SUSE Linux SUSE	`cpe:/o:suse:suse_linux:-`	—
Red Hat Enterprise Linux Red Hat	`cpe:/o:redhat:enterprise_linux:-`	—
Ubuntu Linux Ubuntu	`cpe:/o:canonical:ubuntu_linux:-`	—
SUSE openSUSE SUSE	`cpe:/o:suse:opensuse:-`	—
Oracle Linux Oracle	`cpe:/o:oracle:linux:-`	—
Internet Systems Consortium Kea <2.6.5 Internet Systems Consortium / Kea		<2.6.5
RESF Rocky Linux RESF	`cpe:/o:resf:rocky_linux:-`	—
Internet Systems Consortium Kea <3.0.3 Internet Systems Consortium / Kea		<3.0.3
Fedora Linux Fedora	`cpe:/o:fedoraproject:fedora:-`	—

References

18 references

URL	Category
https://wid.cert-bund.de/.well-known/csaf/white/2…	self
https://wid.cert-bund.de/portal/wid/securityadvis…	self
https://kb.isc.org/docs/cve-2026-3608	external
https://lists.opensuse.org/archives/list/security…	external
https://bodhi.fedoraproject.org/updates/FEDORA-20…	external
https://bodhi.fedoraproject.org/updates/FEDORA-20…	external
https://bodhi.fedoraproject.org/updates/FEDORA-20…	external
https://bodhi.fedoraproject.org/updates/FEDORA-20…	external
https://bodhi.fedoraproject.org/updates/FEDORA-EP…	external
https://lists.opensuse.org/archives/list/security…	external
https://lists.suse.com/pipermail/sle-security-upd…	external
https://access.redhat.com/errata/RHSA-2026:7342	external
https://errata.build.resf.org/RLSA-2026:7342	external
https://linux.oracle.com/errata/ELSA-2026-7342.html	external
https://lists.suse.com/pipermail/sle-security-upd…	external
https://lists.suse.com/pipermail/sle-security-upd…	external
https://access.redhat.com/errata/RHSA-2026:11344	external
https://ubuntu.com/security/notices/USN-8403-1	external

JSON

To clipboard

{
  "document": {
    "aggregate_severity": {
      "text": "mittel"
    },
    "category": "csaf_base",
    "csaf_version": "2.0",
    "distribution": {
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        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "de-DE",
    "notes": [
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        "category": "legal_disclaimer",
        "text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
      },
      {
        "category": "description",
        "text": "Internet Systems Consortium (ISC) Kea ist eine Open-Source-DHCP-Server-Implementierung.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Internet Systems Consortium Kea ausnutzen, um einen Denial of Service Angriff durchzuf\u00fchren.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- Linux\n- UNIX",
        "title": "Betroffene Betriebssysteme"
      }
    ],
    "publisher": {
      "category": "other",
      "contact_details": "csaf-provider@cert-bund.de",
      "name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
      "namespace": "https://www.bsi.bund.de"
    },
    "references": [
      {
        "category": "self",
        "summary": "WID-SEC-W-2026-0887 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0887.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2026-0887 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0887"
      },
      {
        "category": "external",
        "summary": "ISC Security Advisory vom 2026-03-26",
        "url": "https://kb.isc.org/docs/cve-2026-3608"
      },
      {
        "category": "external",
        "summary": "openSUSE Security Update OPENSUSE-SU-2026:10421-1 vom 2026-03-28",
        "url": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/Z2NRLDD4JRHMJ7YIS3IGXRRVX4B3ZBIZ/"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-2026-11E168602C vom 2026-03-30",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2026-11e168602c"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-2026-2B21A4DAFE vom 2026-03-30",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2026-2b21a4dafe"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-2026-66F19B11E0 vom 2026-03-30",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2026-66f19b11e0"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-2026-04263E2A5B vom 2026-03-30",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2026-04263e2a5b"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory FEDORA-EPEL-2026-01EA52D899 vom 2026-03-30",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-01ea52d899"
      },
      {
        "category": "external",
        "summary": "openSUSE Security Update OPENSUSE-SU-2026:20452-1 vom 2026-04-02",
        "url": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/VJTNC5LJ7BV7MLF2QJ55CVDSCS7RTRIM/"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:20989-1 vom 2026-04-09",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-April/025177.html"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2026:7342 vom 2026-04-09",
        "url": "https://access.redhat.com/errata/RHSA-2026:7342"
      },
      {
        "category": "external",
        "summary": "Rocky Linux Security Advisory RLSA-2026:7342 vom 2026-04-11",
        "url": "https://errata.build.resf.org/RLSA-2026:7342"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2026-7342 vom 2026-04-11",
        "url": "https://linux.oracle.com/errata/ELSA-2026-7342.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:1378-1 vom 2026-04-16",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-April/025385.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2026:1548-1 vom 2026-04-22",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-April/025568.html"
      },
      {
        "category": "external",
        "summary": "Red Hat Security Advisory RHSA-2026:11344 vom 2026-04-28",
        "url": "https://access.redhat.com/errata/RHSA-2026:11344"
      },
      {
        "category": "external",
        "summary": "Ubuntu Security Notice USN-8403-1 vom 2026-06-08",
        "url": "https://ubuntu.com/security/notices/USN-8403-1"
      }
    ],
    "source_lang": "en-US",
    "title": "Internet Systems Consortium Kea: Schwachstelle erm\u00f6glicht Denial of Service",
    "tracking": {
      "current_release_date": "2026-06-08T22:00:00.000+00:00",
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        "date": "2026-06-09T09:01:24.735+00:00",
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      "revision_history": [
        {
          "date": "2026-03-26T23:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2026-03-29T22:00:00.000+00:00",
          "number": "2",
          "summary": "Neue Updates von openSUSE aufgenommen"
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        {
          "date": "2026-03-30T22:00:00.000+00:00",
          "number": "3",
          "summary": "Neue Updates von Fedora aufgenommen"
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          "date": "2026-04-06T22:00:00.000+00:00",
          "number": "4",
          "summary": "Neue Updates von openSUSE aufgenommen"
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          "date": "2026-04-09T22:00:00.000+00:00",
          "number": "5",
          "summary": "Neue Updates von SUSE und Red Hat aufgenommen"
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          "number": "6",
          "summary": "Neue Updates von Rocky Enterprise Software Foundation und Oracle Linux aufgenommen"
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          "number": "7",
          "summary": "Neue Updates von SUSE aufgenommen"
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          "number": "8",
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          "date": "2026-04-27T22:00:00.000+00:00",
          "number": "9",
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              "product_id": "T000126",
              "product_identification_helper": {
                "cpe": "cpe:/o:canonical:ubuntu_linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Ubuntu"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-3608",
      "product_status": {
        "known_affected": [
          "T002207",
          "67646",
          "T000126",
          "T027843",
          "T004914",
          "T052201",
          "T032255",
          "T052202",
          "74185"
        ]
      },
      "release_date": "2026-03-26T23:00:00.000+00:00",
      "title": "CVE-2026-3608"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-3608 (GCVE-0-2026-3608)

WID-SEC-W-2026-0887

Tags

Sightings

Nomenclature