P4Verified

CVE-2026-4438: azl3 glibc 2.38-19 on Azure Linux 3.0 (exact versions not specified); +4 more affected products

CVE-2026-4438 affects azl3 glibc 2.38-19 on Azure Linux 3.0. CVSS 3.1 base score 5.9 (Microsoft Security Response Center). EPSS 0.00316 (percentile 0.22521), scored 08-Oct-2026. Fixed version: 2.35-0ubuntu3.15.aikido.4. Fixed version: 2.35-0ubuntu3.15.aikido.4.

Affected technology

azl3 glibc 2.38-19 on Azure Linux 3.0 · Exact affected versions not specified by the source
Microsoft

azl3 glibc 2.38-18 on Azure Linux 3.0 · Exact affected versions not specified by the source
Microsoft

cbl2 glibc 2.35-10 on CBL Mariner 2.0 · Exact affected versions not specified by the source
Microsoft

glibc · Exact affected versions not specified by the source
Vendor not specified by the source

rootio-glibc · Exact affected versions not specified by the source
Vendor not specified by the source

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 11-Oct-2026 14:59 UTC

Product: azl3 glibc 2.38-19 on Azure Linux 3.0
CCR priority: 23.7 /100 (P4)
CVSS 3.1: 5.9 /10 · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H · Microsoft Security Response Center
EPSS: 0.00316 · percentile 0.22604 · 2026-10-10
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-10 21:26:32.650893+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 2026-10-09 12:25:52.537420+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-4438.html