If a DHCPv4 client sends a request with some specific options, and Kea fails to find an appropriate subnet for the client, the `kea-dhcp4` process will abort with an assertion failure. This happens only if the client request is unicast directly to Kea; broadcast messages do not cause the problem. This issue affects Kea versions 2.7.1 through 2.7.9, 3.0.0, and 3.1.0.

The remote Oracle Linux 10 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2025-21006 advisory.

    - Fixes CVE-2025-11232

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2025:21006 advisory.

    DHCP implementation from Internet Systems Consortium, Inc. that features fully functional DHCPv4, DHCPv6     and Dynamic DNS servers. Both DHCP servers fully support server discovery, address assignment, renewal,     rebinding and release. The DHCPv6 server supports prefix delegation. Both servers support DNS Update     mechanism, using stand-alone DDNS daemon.

    Security Fix(es):

    * kea: Kea crash upon interaction between specific client options and subnet selection (CVE-2025-40779)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Fedora 43 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2025-9ead6bf29b advisory.

    - New version 3.0.1 (rhbz#2391289)
    - Fixes CVE-2025-40779 (rhbz#2391373)

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Fedora 42 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2025-92b4ae7199 advisory.

    - New version 3.0.1 (rhbz#2391289)
    - Fixes CVE-2025-40779 (rhbz#2391373)

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - If a DHCPv4 client sends a request with some specific options, and Kea fails to find an appropriate subnet     for the client, the `kea-dhcp4` process will abort with an assertion failure. This happens only if the     client request is unicast directly to Kea; broadcast messages do not cause the problem. This issue affects     Kea versions 2.7.1 through 2.7.9, 3.0.0, and 3.1.0. (CVE-2025-40779)

Note that Nessus relies on the presence of the package as reported by the vendor.

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the f727fe60-8389-11f0-8438-001b217e4ee5 advisory.

    Internet Systems Consortium, Inc. reports:
    We corrected an issue in `kea-dhcp4` that caused             the server to abort if a client sent a broadcast request with particular             options, and Kea failed to find an appropriate subnet for that client.
            This addresses CVE-2025-40779 [#4055, #4048].

Tenable has extracted the preceding description block directly from the FreeBSD security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Fedora 44 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2025-e79e424a48 advisory.

    Automatic update for kea-3.0.1-1.fc44.

    ##### **Changelog**

    ```
    * Fri Aug 29 2025 Martin Osvald <mosvald@redhat.com> - 3.0.1-1
    - New version 3.0.1 (rhbz#2391289)
    - Fixes CVE-2025-40779 (rhbz#2391373)

    ```

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
277405	Oracle Linux 10 : kea (ELSA-2025-21006)	Nessus	Oracle Linux Local Security Checks	high
274827	RHEL 10 : kea (RHSA-2025:21006)	Nessus	Red Hat Local Security Checks	high
265085	Fedora 43 : kea (2025-9ead6bf29b)	Nessus	Fedora Local Security Checks	high
261657	Fedora 42 : kea (2025-92b4ae7199)	Nessus	Fedora Local Security Checks	high
261193	Linux Distros Unpatched Vulnerability : CVE-2025-40779	Nessus	Misc.	high
258123	FreeBSD : ISC KEA -- kea-dhcp4 aborts if client sends a broadcast request with particular options (f727fe60-8389-11f0-8438-001b217e4ee5)	Nessus	FreeBSD Local Security Checks	high
258119	Fedora 44 : kea (2025-e79e424a48)	Nessus	Fedora Local Security Checks	high

Detections

Analytics

CVE-2025-40779

high

Tenable Plugins

high

high

high

high

high

high

high