Cyber Resilience

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 v4 8.6 CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS Score 0.0262 86.0th percentile
Risk Priority 19 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 8.6 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 14.0% 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).

Deeper analysis

A vulnerability identified as CVE-2025-27392 affects Siemens SCALANCE LPE9403 devices (part number 6GK5998-3GS00-2AC2) running all firmware versions prior to V4.0. The flaw arises because the devices do not properly sanitize user input when new VXLAN configurations are created, corresponding to CWE-78 and enabling OS command injection.

An authenticated remote attacker possessing high privileges can supply crafted input over the network to execute arbitrary code on the device. Successful exploitation grants the attacker full control over the affected appliance, impacting its confidentiality, integrity, and availability.

The Siemens advisory SSA-075201 states that the issue is resolved by upgrading to firmware version V4.0 or later. No other mitigations such as configuration changes or workarounds are specified in the reference.

EU & UK References

Vulnerability details

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…

more

device.

CWE(s)
CWE-78

Related Threats

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

CVEs Like This One

CVE-2025-27393Same product: Siemens Scalance Lpe9403
CVE-2025-27394Same product: Siemens Scalance Lpe9403
CVE-2025-27395Same product: Siemens Scalance Lpe9403
CVE-2025-27396Same product: Siemens Scalance Lpe9403
CVE-2026-42454Shared CWE-78
CVE-2026-34796Shared CWE-78
CVE-2024-57016Shared CWE-78
CVE-2025-50475Shared CWE-78
CVE-2024-57015Shared CWE-78
CVE-2026-36828Shared CWE-78

Affected Assets

siemens
scalance lpe9403 firmware
≤ 4.0

Mitigating Controls

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.

References