CVE-2025-11232— Invalid characters cause assert
Quick assessment
Affected
ISC Kea
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
ISC Kea是ISC组织的一个现代开源 DHCPv4 和 DHCPv6 服务器。 ISC Kea 3.0.1版本至3.0.1版本和3.1.1版本至3.1.2版本存在安全漏洞，该漏洞源于特定配置参数设置不当，可能导致kea-dhcp4意外退出。
Possible ATT&CK Techniques 2 AI
T1499.002 · Service Exhaustion Flood T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2025-11232
Vulnerability Information
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Vulnerability Title
Invalid characters cause assert
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用越界的指针偏移
Source: CVE Program / CVE List V5
Vulnerability Title
ISC Kea 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ISC Kea是ISC组织的一个现代开源 DHCPv4 和 DHCPv6 服务器。 ISC Kea 3.0.1版本至3.0.1版本和3.1.1版本至3.1.2版本存在安全漏洞，该漏洞源于特定配置参数设置不当，可能导致kea-dhcp4意外退出。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2025-11232
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V. Comments for CVE-2025-11232
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