Kea DHCP Daemons Stack Overflow via API Socket (2.6.02.6.4, 3.0.03.0.2)
CVE-2026-3608 Published on March 25, 2026
Stack overflow in Kea daemons
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.
Vulnerability Analysis
CVE-2026-3608 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
What is an assertion failure Vulnerability?
The product contains an assert() or similar statement that can be triggered by an attacker, which leads to an application exit or other behavior that is more severe than necessary.
CVE-2026-3608 has been classified to as an assertion failure vulnerability or weakness.
Products Associated with CVE-2026-3608
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Affected Versions
ISC Kea:- Version 2.6.0, <= 2.6.4 is affected.
- Version 3.0.0, <= 3.0.2 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.