CVE-2025-27396Network attack vector

Authenticated remote privilege escalation

Published Mar 11, 2025 · Updated Mar 11, 2025

Privilege management in Siemens SCALANCE LPE9403 before 4.0 allows remote authenticated users to gain elevated device privileges. Siemens states that affected firmware fails to limit the privilege elevation required for certain valid functionality, but has not disclosed the affected interface, operation, or privilege-checking logic. A low-privileged account and network access are required; successful exploitation grants higher privileges with device-wide confidentiality, integrity, and availability impact.

CVSS severity8.8
High
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege management in Siemens SCALANCE LPE9403 before 4.0 allows remote authenticated users to gain elevated device privileges. Siemens states that affected firmware fails to limit the privilege elevation required for certain valid functionality, but has not disclosed the affected interface, operation, or privilege-checking logic. A low-privileged account and network access are required; successful exploitation grants higher privileges with device-wide confidentiality, integrity, and availability impact.

The record

CVE
CVE-2025-27396
Published
Mar 11, 2025
Updated
Mar 11, 2025
Vendor
Siemens
Product
SCALANCE LPE9403
Classifications
CWE-273, T1068
Attack vector
network
Privileges
authenticated

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 privilegesauthenticated

What is affected?

Siemens · SCALANCE LPE9403version=0 <V4.0

Published CVSS scores

8.7Siemens AGCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.8Siemens AGCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-273Improper Check for Dropped Privileges
T1068Exploitation for Privilege Escalation

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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