Vulnerability in Isc Kea
CVE-2025-11232
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.
EPSS: 0.004 (32.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Isc Kea — versions 3.0.1, 3.1.1, 2.6.0
Weakness classification (CWE)
References
- security-officer@isc.org (vendor-advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2025-11232?
- CVE-2025-11232 is a high-severity vulnerability in Isc Kea, classified under CWE-823. CVSS score: 7.5/10. Published 2025-10-29.
- How severe is CVE-2025-11232?
- High severity. CVSS v3 base score is 7.5 out of 10.