CVE-2026-6507

CVE-2026-6507 · Dnsmasq: dnsmasq: denial of service due to out-of-bounds write in dhcp bootreply processing

This page contains facts from public vulnerability sources. Check the original advisory before updating.

A flaw was found in dnsmasq. A remote attacker could exploit an out-of-bounds write vulnerability by sending a specially crafted BOOTREPLY (Bootstrap Protocol Reply) packet to a dnsmasq server configured with the `--dhcp-split-relay` option. This can lead to memory corruption, causing the dnsmasq daemon to crash and resulting in a denial of service (DoS).

CVSS 7.5 · High · EPSS 0.6% · Fix available

Published

2026-04-17T12:23:31.852Z

Updated

2026-09-01T11:45:02.240Z

Stack: system

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