CVE-2025-27395Network attack vector

Arbitrary file access via unrestricted SFTP paths

Published Mar 11, 2025 · Updated Mar 11, 2025

Path traversal in Siemens SCALANCE LPE9403 before 4.0 allows remote authenticated users to read and write arbitrary files through SFTP. The SFTP service fails to confine authenticated file operations to the permitted directory and privilege boundary. A highly privileged device account is required; exploitation exposes arbitrary file contents and permits arbitrary file modification.

CVSS severity8.6
High
EPSS probability0.65%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in Siemens SCALANCE LPE9403 before 4.0 allows remote authenticated users to read and write arbitrary files through SFTP. The SFTP service fails to confine authenticated file operations to the permitted directory and privilege boundary. A highly privileged device account is required; exploitation exposes arbitrary file contents and permits arbitrary file modification.

The record

CVE
CVE-2025-27395
Published
Mar 11, 2025
Updated
Mar 11, 2025
Vendor
Siemens
Product
SCALANCE LPE9403
Classifications
CWE-22, T0822
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Mar 11, 2025CVE publishedPublication date reported by the CVE source.
  2. Mar 11, 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=0 <V4.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Siemens · SCALANCE LPE9403version=0 <V4.0

Published CVSS scores

8.6Siemens AGCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T0822External Remote Services

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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