Cyber Posture

CVE-2025-27393

High

Published: 11 March 2025

Published
11 March 2025
Modified
22 August 2025
KEV Added
—
Patch
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CVSS Score 7.2 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.0311 86.9th percentile
Risk Priority 16 60% EPSS · 20% KEV · 20% CVSS

Description

Adversaries may abuse Unix shell commands and scripts for execution.

Security Summary

CVE-2025-27393 affects Siemens SCALANCE LPE9403 (6GK5998-3GS00-2AC2) in all versions prior to V4.0. The vulnerability arises from improper sanitization of user input when creating new users, classified as CWE-78 (OS Command Injection). It carries a CVSS v3.1 base score of 7.2 (AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H) and was published on 2025-03-11.

An authenticated remote attacker with high privileges can exploit this vulnerability over the network with low attack complexity and no user interaction. Exploitation enables arbitrary code execution on the device, resulting in high impacts to confidentiality, integrity, and availability.

The Siemens security advisory provides mitigation guidance at https://cert-portal.siemens.com/productcert/html/ssa-075201.html. Affected devices should be updated to V4.0 or later to address the issue.

Details

CWE(s)
CWE-78

Affected Products

siemens
scalance lpe9403 firmware
≤ 4.0

MITRE ATT&CK Enterprise Techniques

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1059.004 Unix Shell Execution
Adversaries may abuse Unix shell commands and scripts for execution.
attack.mitre.org →
Why these techniques?

OS command injection in network-accessible management interface (user creation) directly enables remote code execution via Unix shell on the device.

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

References