CVE-2026-3608 is a high-severity stack overflow vulnerability affecting ISC Kea DHCP versions 2.6.0-2.6.4 and 3.0.0-3.0.2. An unauthenticated remote attacker can send a maliciously crafted message to Kea daemons (kea-ctrl-agent, kea-dhcp-ddns, kea-dhcp4, or kea-dhcp6) via API or HA listeners, causing them to crash. This results in a denial-of-service with a CVSS score of 7.5 (High), indicating low attack complexity and no user interaction required, severely impacting availability. While there is no evidence of active exploitation or public exploit code, the vulnerability has garnered community discussion and media coverage, underscoring its potential impact.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 2.6.0, <= 2.6.4CPE match | cpe:2.3:a:isc:kea:*:*:*:*:*:*:*:* | ||
>= 3.0.0, <= 3.0.2CPE match | cpe:2.3:a:isc:kea:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.