CVE-2026-3608
Stack overflow in Kea daemons
- State
- Published
- Severity
- 7.5 High
- Published
- Mar 25, 2026
- Updated
- Jul 15, 2026
- Reserved
- Mar 5, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | isc |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | redhat-SADP |
Weaknesses
- CWE-617 Reachable Assertion
Affected Products
| Product | Versions |
|---|---|
KeaISC |
|
References
- CVE-2026-3608vendor-advisory
- https://downloads.isc.org/isc/kea/2.6.5patch
- https://downloads.isc.org/isc/kea/3.0.3patch
- http://www.openwall.com/lists/oss-security/2026/03/25/6
- https://access.redhat.com/security/cve/CVE-2026-3608vdb-entry
- RHBZ#2451139issue-tracking
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-3608.json
- https://access.redhat.com/errata/RHSA-2026:11344vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:7342vendor-advisory
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