CVE-2023-29131: simatic cn 4100 firmware before 2.5 (exclusive); +1 more affected products

CVE-2023-29131. CVSS 3.1 base score 10.0 (CRITICAL, NVD). EPSS 0.00423 (percentile 0.35582), scored 22-Oct-2026.

Affected technology

simatic cn 4100 firmware · before 2.5 (exclusive)
siemens

SIMATIC CN 4100 · All versions < V2.5
Siemens

Description’s affected range: versions < V2.5)

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · Low privileges required · No user interaction required

Attack conditions (NVD, CVSS 3.1): Network (remote) · No privileges required · No user interaction required

What an attacker can do

An attacker could bypass network isolation. Vendor/CNA’s CVSS 3.1 assessment (base score 7.4/10) rates confidentiality, integrity and availability impact as low. NVD’s CVSS 3.1 assessment (base score 10.0/10) rates confidentiality, integrity and availability impact as high.

Published 24-Oct-2026 15:08 UTC

CWE: CWE-276
CCR priority: 40.1 /100 (P3)
CVSS 3.1: 10.0 /10 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H · NVD
EPSS: 0.00423 · percentile 0.35629 · 2026-10-24
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-24 15:09:16.138216+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-24 15:07:27.951960+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2023-29131.html