CVE-2026-56416

Microsoft · Published July 23, 2026

4.8

CVSS v3.1

MEDIUM

Patch availableGet patch

Description

Possible heap buffer overflow when validator canonicalizes RDATA that contains domain name. Possible heap buffer overflow when validator canonicalizes RDATA that contains domain name

Affected Products

azl3 unbound 1.25.1-1 on Azure Linux 3.0

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L/E:U