CVE-2026-27601: azl3 boost 1.83.0-2 on Azure Linux 3.0 (exact versions not specified); +10 more affected products

CVE-2026-27601 affects azl3 boost 1.83.0-2 on Azure Linux 3.0. CVSS 3.1 base score 7.5 (Microsoft Security Response Center). EPSS 0.01025 (percentile 0.62321), scored 03-Oct-2026.

Affected technology

azl3 boost 1.83.0-2 on Azure Linux 3.0 · Exact affected versions not specified by the source
Microsoft

cbl2 cyrus-sasl 2.1.28-4 on CBL Mariner 2.0 · Exact affected versions not specified by the source
Microsoft

cbl2 cyrus-sasl-bootstrap 2.1.28-4 on CBL Mariner 2.0 · Exact affected versions not specified by the source
Microsoft

azl3 cyrus-sasl 2.1.28-8 on Azure Linux 3.0 · Exact affected versions not specified by the source
Microsoft

azl3 cyrus-sasl-bootstrap 2.1.28-8 on Azure Linux 3.0 · Exact affected versions not specified by the source
Microsoft

azl3 krb5 1.21.3-3 on Azure Linux 3.0 · Exact affected versions not specified by the source
Microsoft

cbl2 python-sphinx 4.4.0-3 on CBL Mariner 2.0 · Exact affected versions not specified by the source
Microsoft

cbl2 python-sqlalchemy 1.4.32-2 on CBL Mariner 2.0 · Exact affected versions not specified by the source
Microsoft

azl3 numpy 1.26.3-4 on Azure Linux 3.0 · Exact affected versions not specified by the source
Microsoft

cbl2 rsyslog 8.2204.1-4 on CBL Mariner 2.0 · Exact affected versions not specified by the source
Microsoft

azl3 rsyslog 8.2308.0-5 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 22-Oct-2026 00:59 UTC

Product: azl3 boost 1.83.0-2 on Azure Linux 3.0
CCR priority: 30.3 /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 · Microsoft Security Response Center
EPSS: 0.01047 · percentile 0.63861 · 2026-10-21
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-22 01:10:55.718059+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 2026-10-21 16:37:07.765749+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-27601.html