SSA-186293

Siemens Security Advisory by Siemens ProductCERT

SSA-186293: XML External Entity (XXE) Injection Vulnerability in SIMOTION SCOUT, SIMOTION SCOUT TIA and SINAMICS STARTER

Publication Date:	2025-08-12
Last Update:	2025-08-12
Current Version:	V1.0
CVSS v3.1 Base Score:	5.5
CVSS v4.0 Base Score:	6.8

SUMMARY

SIMOTION SCOUT, SIMOTION SCOUT TIA and SINAMICS STARTER are affected by an XXE injection vulnerability that could allow an attacker to access arbitrary application files.

Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens is preparing further fix versions and recommends specific countermeasures for products where fixes are not, or not yet available.

KNOWN AFFECTED PRODUCTS

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Affected Product and Versions	Remediation
SIMOTION SCOUT	Show more details
SIMOTION SCOUT V5.4 All versions affected by CVE-2025-40584	Currently no fix is planned See recommendations from section Workarounds and Mitigations
SIMOTION SCOUT V5.5 All versions affected by CVE-2025-40584	Currently no fix is planned See recommendations from section Workarounds and Mitigations
SIMOTION SCOUT V5.6 All versions < V5.6 SP1 HF7 affected by CVE-2025-40584	Update to V5.6 SP1 HF7 or later version https://support.industry.siemens.com/cs/ww/en/view/109989067/ See further recommendations from section Workarounds and Mitigations
SIMOTION SCOUT V5.7 All versions < V5.7 SP1 HF1 affected by CVE-2025-40584	Update to V5.7 SP1 HF1 or later version https://support.industry.siemens.com/cs/ww/en/view/109989066/ See further recommendations from section Workarounds and Mitigations
SINAMICS STARTER	Show more details
SINAMICS STARTER V5.5 All versions affected by CVE-2025-40584	Currently no fix is planned See recommendations from section Workarounds and Mitigations
SINAMICS STARTER V5.6 All versions affected by CVE-2025-40584	Currently no fix is planned See recommendations from section Workarounds and Mitigations
SINAMICS STARTER V5.7 All versions affected by CVE-2025-40584	Currently no fix is available See recommendations from section Workarounds and Mitigations
Totally Integrated Automation Portal (TIA Portal)	Show more details
Totally Integrated Automation Portal (TIA Portal) V17	Show more details
SIMOTION SCOUT TIA V5.4 All versions affected by CVE-2025-40584	Currently no fix is available See recommendations from section Workarounds and Mitigations
Totally Integrated Automation Portal (TIA Portal) V18	Show more details
SIMOTION SCOUT TIA V5.5 All versions affected by CVE-2025-40584	Currently no fix is available See recommendations from section Workarounds and Mitigations
Totally Integrated Automation Portal (TIA Portal) V19	Show more details
SIMOTION SCOUT TIA V5.6 All versions < V5.6 SP1 HF7 affected by CVE-2025-40584	Update to V5.6 SP1 HF7 or later version https://support.industry.siemens.com/cs/ww/en/view/109989067/ See further recommendations from section Workarounds and Mitigations
Totally Integrated Automation Portal (TIA Portal) V20	Show more details
SIMOTION SCOUT TIA V5.7 All versions < V5.7 SP1 HF1 affected by CVE-2025-40584	Update to V5.7 SP1 HF1 or later version https://support.industry.siemens.com/cs/ww/en/view/109989066/ See further recommendations from section Workarounds and Mitigations

WORKAROUNDS AND MITIGATIONS

Siemens has identified the following specific workarounds and mitigations that customers can apply to reduce the risk:

CVE-2025-40584: Do not open untrusted XML files in affected applications

Product-specific remediations or mitigations can be found in the section Known Affected Products.
Please follow the General Security Recommendations.

GENERAL SECURITY RECOMMENDATIONS

As a general security measure, Siemens strongly recommends to protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens' operational guidelines for Industrial Security (Download: https://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals. Additional information on Industrial Security by Siemens can be found at: https://www.siemens.com/industrialsecurity

PRODUCT DESCRIPTION

SIMOTION SCOUT is the engineering tool for commissioning of SIMOTION devices.

SIMOTION SCOUT TIA is the add-in for TIA Portal for commissioning of SIMOTION devices.

SINAMICS STARTER is the drive engineering tool for parameterizing and commissioning.

VULNERABILITY DESCRIPTION

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This chapter describes all vulnerabilities (CVE-IDs) addressed in this security advisory. Wherever applicable, it also documents the product-specific impact of the individual vulnerabilities.

Vulnerability CVE-2025-40584

The affected application contains a XML External Entity Injection (XXE) vulnerability while parsing specially crafted XML files. This could allow an attacker to read arbitrary files in the system.

CVSS v3.1 Base Score	5.5
CVSS v3.1 Vector	CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CVSS v4.0 Base Score	6.8
CVSS v4.0 Vector	CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CWE	CWE-611: Improper Restriction of XML External Entity Reference

ACKNOWLEDGMENTS

Siemens thanks the following party for its efforts:

Michael Heinzl for coordinated disclosure

ADDITIONAL INFORMATION

For further inquiries on security vulnerabilities in Siemens products and solutions, please contact the Siemens ProductCERT: https://www.siemens.com/cert/advisories

HISTORY DATA

V1.0 (2025-08-12):

Publication Date

The use of Siemens Security Advisories is subject to the terms and conditions listed on: https://www.siemens.com/productcert/terms-of-use.