CVE-2025-40939CWE-284broken-access-control

CVE-2025-40939

Medium · published December 9, 2025

CVSS v3.1
4.6
EPSS
0%
Percentile
11.0
In the wild
Unconfirmed
What it is

A vulnerability has been identified in SIMATIC CN 4100 (All versions < V4.0.1). The affected device contains a USB port which allows unauthenticated connections. This could allow an attacker with physical access to the device to trigger reboot that could cause denial of service condition.

The record
Technical detail
CVSS v3.1
4.6 · MEDIUM
Vector
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00213 · 11.0th percentile
Weakness
CWE-284 · Improper Access Control
Published
2025-12-09T21:17Z
Affected products (1)
ProductVersionsFixed in
siemens/simatic_cn_4100_firmware< 4.0.14.0.1
References (1)
https://cert-portal.siemens.com/productcert/html/ssa-416652.html · [email protected]
EPSS history
Timeline
  • 09 DEC 10:44Z
    A vulnerability has been identified in SIMATIC CN 4100 (All versions < V4.0.1)
    cvelistv5