Security Advisory

CVE-2025-40779

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2025-08-27 20:23:29

Last updated 2025-11-04 21:10:15

Assigner isc

State PUBLISHED

Description

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.

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