CVE-2025-11232

Published: Oct 29, 2025Modified: Jun 17, 2026Deferred

7.5

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitability: 3.9 / Impact: 3.6

Source: security-officer@isc.org (Secondary)

Description

To trigger the issue, three configuration parameters must have specific settings: "hostname-char-set" must be left at the default setting, which is "[^A-Za-z0-9.-]"; "hostname-char-replacement" must be empty (the default); and "ddns-qualifying-suffix" must *NOT* be empty (the default is empty). DDNS updates do not need to be enabled for this issue to manifest. A client that sends certain option content would then cause kea-dhcp4 to exit unexpectedly. This issue affects Kea versions 3.0.1 through 3.0.1 and 3.1.1 through 3.1.2.

Related CWEs

CWE-823

Use of Out-of-range Pointer Offset

The product performs pointer arithmetic on a valid pointer, but it uses an offset that can point outside of the intended range of valid memory locations for the resulting pointer.

References (2)

https://kb.isc.org/docs/cve-2025-11232

Source: security-officer@isc.org

http://www.openwall.com/lists/oss-security/2025/10/29/5

Source: af854a3a-2127-422b-91ae-364da2661108

Timeline

No history available yet.