This issue affects Kea versions 2.6.0 through 2.6.4 and 3.0.0 through 3.0.2.
No advisories yet.
Solution
Upgrade to the patched release most closely related to your current version of Kea: 2.6.5 or 3.0.3.
Workaround
Securing the API sockets with TLS, and requiring the client to authenticate with a certificate (mutual authentication), prevents the attacker from establishing an API connection to Kea. Set cert-required to true (the default) to require a client certificate. See: https://kea.readthedocs.io/en/stable/arm/security.html#tls-https-configuration
Wed, 25 Mar 2026 14:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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Wed, 25 Mar 2026 12:15:00 +0000
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| References |
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| Metrics |
threat_severity
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threat_severity
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Wed, 25 Mar 2026 09:00:00 +0000
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| Description | 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. | |
| Title | Stack overflow in Kea daemons | |
| First Time appeared |
Isc
Isc kea |
|
| Weaknesses | CWE-617 | |
| CPEs | cpe:2.3:a:isc:kea:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Isc
Isc kea |
|
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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Status: PUBLISHED
Assigner: isc
Published:
Updated: 2026-03-25T17:22:19.777Z
Reserved: 2026-03-05T17:47:36.088Z
Link: CVE-2026-3608
Updated: 2026-03-25T13:26:07.634Z
Status : Awaiting Analysis
Published: 2026-03-25T09:16:25.810
Modified: 2026-03-25T15:41:33.977
Link: CVE-2026-3608
OpenCVE Enrichment
No data.