CVE-2023-27407Network attack vector

Authenticated command injection via web management input

Published May 9, 2023 · Updated Jan 28, 2025

Command injection in Siemens SCALANCE LPE9403 before V2.1 allows remote authenticated users to access the root operating system. The web-based management interface fails to properly validate user input before processing it as a command, enabling injection into the appliance environment. Authentication to the management interface is required, and successful exploitation can compromise confidentiality, integrity, and availability through root-level access.

CVSS severity9.9
Critical
EPSS probability1.30%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in Siemens SCALANCE LPE9403 before V2.1 allows remote authenticated users to access the root operating system. The web-based management interface fails to properly validate user input before processing it as a command, enabling injection into the appliance environment. Authentication to the management interface is required, and successful exploitation can compromise confidentiality, integrity, and availability through root-level access.

The record

CVE
CVE-2023-27407
Published
May 9, 2023
Updated
Jan 28, 2025
Vendor
Siemens
Product
SCALANCE LPE9403
Classifications
CWE-78, CWE-77, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 9, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 28, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=All versions < V2.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Siemens · SCALANCE LPE9403version=All versions < V2.1

Published CVSS scores

9.9Siemens AGCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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