AUGUST 4, 2026
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Case File

CVE-2025-40779

HIGH · CVSS 7.5 EPSS 0.51%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2025-08-27 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.5. See the original NVD description below for full technical details.

CVE
CVE-2025-40779
Severity
HIGH
CVSS
7.5
EPSS
0.51%

Original NVD 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.