CVE-2025-11232: isc kea Use of Out-of-range Pointer Offset
Vulnerability summary
CVE-2025-11232 is a high (CVSS 7.5) Use of Out-of-range Pointer Offset vulnerability in isc kea. EPSS estimates a 0.42% chance of exploitation in the next 30 days, higher than 35.3% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 2 · Related 2Timeline
- 29-10-2025PublishedVulnerability first disclosed.
- 04-11-2025Last modifiedVulnerability information updated.
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.
CVSS metrics
4 scores · 4 sources · 1 version- OSV · Red hatEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.42%
Chance of exploitation in the next 30 days
Percentile
35%
Versus all other CVEs
30-day change
+0.03 pp
From 0.40% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Redhat11 products
- kea< 0:3.0.1-2.el10_1
- kea-debuginfo< 0:3.0.1-2.el10_1
- kea-debugsource< 0:3.0.1-2.el10_1
- kea-devel-debuginfo< 0:3.0.1-2.el10_1
- kea-doc< 0:3.0.1-2.el10_1
Isc1 product
- kea3.0.1 | ≥ 3.1.1, ≤ 3.1.2
Opensuse1 product
- kea&distro=openSUSE Tumbleweed< 3.0.2-1.1
Ubuntu1 product
- isc-keaAll versions (No fix recorded)
4 vendors · 14 products
