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.

Vendor Advisory NVD

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.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
NONE
Integrity Impact:
NONE
Availability Impact:
HIGH

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

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2026-3608 are published in these products:

ISC Kea
 
Red Hat Enterprise Linux Eus
 
Red Hat Enterprise Linux (RHEL)
 

Affected Versions

ISC Kea: Red Hat Enterprise Linux AppStream EUS (v. 10.0): Red Hat Enterprise Linux AppStream (v. 10): Red Hat Enterprise Linux BaseOS EUS (v. 10.0): Red Hat Enterprise Linux BaseOS (v. 10): Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0): Red Hat Enterprise Linux CodeReady Linux Builder (v. 10):

Exploit Probability

EPSS
1.05%
Percentile
59.81%

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.