Siemens SCALANCE LPE9403 Improper Limitation of a Pathname to a Restricted Directory (CVE-2025-27397)

low Tenable OT Security Plugin ID 503137

Synopsis

The remote OT asset is affected by a vulnerability.

Description

Affected devices do not properly limit user controlled paths to which logs are written and from where they are read. This could allow an authenticated highly-privileged remote attacker to read and write arbitrary files in the filesystem, if and only if the malicious path ends with 'log' .

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Solution

The following text was originally created by the Cybersecurity and Infrastructure Security Agency (CISA). The original can be found at CISA.gov.

Siemens has identified the following specific workarounds and mitigations users can apply to reduce risk:

- SCALANCE LPE9403 (6GK5998-3GS00-2AC2): Update to V4.0 or later version.

As a general security measure, Siemens recommends protecting network access to devices with appropriate mechanisms. To operate the devices in a protected IT environment, Siemens recommends configuring the environment according to Siemens' operational guidelines for industrial security and following recommendations in the product manuals.

Additional information on industrial security by Siemens can be found on the Siemens industrial security webpage

For more information see the associated Siemens security advisory SSA-075201 in HTML and CSAF.

Plugin Details

Severity: Low

ID: 503137

File Name: tenable_ot_siemens_CVE-2025-27397.nasl

Version: 1.2

Type: remote

Family: Tenable.ot

Published: 3/17/2025

Updated: 2/14/2026

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Low

Score: 2.5

CVSS v3

Risk Factor: Low

Base Score: 3.8

Temporal Score: 3.4

Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:siemens:scalance_lpe9403_firmware:4.0

Required KB Items: Tenable.ot/Siemens

Exploit Ease: No known exploits are available

Patch Publication Date: 3/11/2025

Vulnerability Publication Date: 3/11/2025

Reference Information

CVE: CVE-2025-27397

CWE: 22

ICSA: 25-072-06

Detections

Analytics