CVE-2026-3608
Publication date 25 March 2026
Last updated 8 June 2026
Ubuntu priority
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| isc-kea | 26.04 LTS resolute |
Not affected
|
| 25.10 questing |
Fixed 2.6.3-2ubuntu0.1
|
|
| 24.04 LTS noble |
Fixed 2.4.1-3ubuntu0.2
|
|
| 22.04 LTS jammy |
Needs evaluation
|
|
| 20.04 LTS focal |
Needs evaluation
|
|
| 18.04 LTS bionic |
Needs evaluation
|
|
| 16.04 LTS xenial | Ignored end of ESM support, was needs-triage |
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
7.5 · High
|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
References
Related Ubuntu Security Notices (USN)
- USN-8403-1
- Kea DHCP vulnerability
- 8 June 2026