CVE-2026-12725

MediumCVSS 5.9/10Last modified Aug 31, 2026

Description

A heap-based buffer overflow was found in dnsmasq. When DNSSEC validation and query logging are both enabled, logging of DS or DNSKEY replies containing unsupported algorithm or digest types can cause dnsmasq to write past the end of an internal logging buffer. A remote attacker able to supply such a DNS response may crash the dnsmasq process, resulting in denial of service.

Metrics

CVSS 3.1 5.9/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-122

Affected software

No affected versions have been published.

Timeline

Published: Jun 22, 2026
Last modified: Aug 31, 2026
NVD status: Analyzed

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