CVE-2026-3608
Stack overflow in Kea daemons
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-617 |
| Vendor | isc |
| Product | kea |
| Published | Mar 25, 2026 |
| Last Updated | Jul 15, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
ISC / Kea
2.6.0 ≤ 2.6.4 3.0.0 ≤ 3.0.2
References
kb.isc.org: https://kb.isc.org/docs/cve-2026-3608 downloads.isc.org: https://downloads.isc.org/isc/kea/2.6.5 downloads.isc.org: https://downloads.isc.org/isc/kea/3.0.3 openwall.com: http://www.openwall.com/lists/oss-security/2026/03/25/6 access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-3608 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2451139 security.access.redhat.com: https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-3608.json access.redhat.com: https://access.redhat.com/errata/RHSA-2026:11344 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:7342
Credits
ISC would like to thank Ali Norouzi of Keysight for bringing this vulnerability to our attention.