CVE-2025-27392

HighRCE

Published: 11 March 2025

Published

11 March 2025

Modified

25 August 2025

KEV Added

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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 0.0262 85.8th percentile

Risk Priority 16 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-27392 is a high-severity OS Command Injection (CWE-78) vulnerability in Siemens Scalance Lpe9403 Firmware. Its CVSS base score is 7.2 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 14.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).

Threat & Defense at a Glance

What attackers do: exploitation maps to Exploit Public-Facing Application (T1190) and 1 other technique. What defenders deploy: see the NIST 800-53 controls recommended below.

Threat & Defense Details

Mitigating Controls (NIST 800-53 r5)AI

SI-10 Information Input Validation good match

prevent

Directly addresses the core issue of improper user input sanitization during VXLAN configuration creation, preventing OS command injection by requiring validation at input points.

SI-2 Flaw Remediation good match

prevent

Mitigates the vulnerability by requiring timely flaw remediation through patching to V4.0 or later, which fixes the input sanitization defect.

AC-6 Least Privilege partial match

prevent

Reduces exploitability by enforcing least privilege, limiting the assignment of high-privileged accounts needed for remote authenticated attacks.

MITRE ATT&CK Enterprise TechniquesAI

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 (CWE-78) in the authenticated management interface enables remote code execution on the network device, directly mapping to T1190 (exploiting public-facing app) and T1059.004 (Unix Shell for arbitrary command execution).

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

NVD Description

A vulnerability has been identified in SCALANCE LPE9403 (6GK5998-3GS00-2AC2) (All versions < V4.0). Affected devices do not properly sanitize user input when creating new VXLAN configurations. This could allow an authenticated highly-privileged remote attacker to execute arbitrary code on the…

device.

Deeper analysisAI

CVE-2025-27392 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 VXLAN configurations, classified under 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 affected device, resulting in high impacts to confidentiality, integrity, and availability.

Siemens Security Advisory SSA-075201, available at https://cert-portal.siemens.com/productcert/html/ssa-075201.html, provides details on the vulnerability and recommended mitigations.