CVE-2026-81634: azl3 unbound 1.26.0-1 on Azure Linux 3.0 (exact versions not specified)

CVE-2026-81634 affects azl3 unbound 1.26.0-1 on Azure Linux 3.0. CVSS 3.1 base score 7.5 (Microsoft Security Response Center). EPSS 0.0048 (percentile 0.40478), scored 24-Oct-2026. Fixed version: 13b6717f1716810523ffb60f971a6c9c5e8ce127.

Affected technology

azl3 unbound 1.26.0-1 on Azure Linux 3.0 · Exact affected versions not specified by the source
Microsoft

Component: Not specified by the source

Attack conditions (Microsoft Security Response Center, CVSS 3.1): Network (remote) · No privileges required · No user interaction required

What an attacker can do

Microsoft Security Response Center’s CVSS 3.1 assessment rates confidentiality and integrity impact as none; availability impact as high. The description does not specify what an attacker can achieve beyond these rated impacts.

Published 25-Oct-2026 00:59 UTC

Product: azl3 unbound 1.26.0-1 on Azure Linux 3.0
CCR priority: 30.1 /100 (P4)
CVSS 3.1: 7.5 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P · Microsoft Security Response Center
EPSS: 0.0048 · percentile 0.40478 · 2026-10-24
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-24 15:09:16.138216+00:00 UTC
Microsoft MSRC Security Update Guide (CVRF) · Source record · observed 2026-10-04 07:08:49.022374+00:00 UTC
OSV.dev · Source record · observed 2026-10-24 16:38:25.544256+00:00 UTC
OSV.dev · Source record · observed 2026-10-21 16:37:07.765749+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-81634.html