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ICSA-25-226-18: Siemens SIMOTION SCOUT, SIMOTION SCOUT TIA, and SINAMICS STARTER ↗ source

August 14, 2025 CISA ICS Advisory

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 recommends specific countermeasures for products where fixes are not, or not yet available. 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.

Advisory Details CISA ICS CSAF feed

Advisory ID
ICSA-25-226-18
Status
Final · version 4
Initial release
2025-08-12
Last revised
2026-04-16 (4 revisions)
Vendor
Siemens
Critical infrastructure sectors
Critical Manufacturing, Transportation Systems, Energy, Healthcare and Public Health, Financial Services, Government Services and Facilities
Deployed
Worldwide
Vendor headquarters
Germany

Republished vendor advisory. This ICSA is a verbatim republication of Siemens ProductCERT SSA-186293 from a direct conversion of the vendor's Common Security Advisory Framework (CSAF) advisory. This is republished to CISA's website as a means of increasing visibility and is provided "as-is" for informational purposes only. CISA is not responsible for the editorial or technical accuracy of republished advisories and provides no warranties of any kind regarding any information contained within this advisory. Further, CISA…

General 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

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

Credit: Siemens ProductCERT

Affected products (11)
  • SIMOTION SCOUT TIA V5.4 — all versions
  • SIMOTION SCOUT TIA V5.5 — all versions
  • SIMOTION SCOUT TIA V5.6 — <V5.6_SP1_HF7
  • SIMOTION SCOUT TIA V5.7 — <V5.7_SP1_HF1
  • SIMOTION SCOUT V5.4 — all versions
  • SIMOTION SCOUT V5.5 — all versions
  • SIMOTION SCOUT V5.6 — <V5.6_SP1_HF7
  • SIMOTION SCOUT V5.7 — <V5.7_SP1_HF1
  • SINAMICS STARTER V5.5 — all versions
  • SINAMICS STARTER V5.6 — all versions
  • SINAMICS STARTER V5.7 — <V5.7_HF2
Revision history (4)
  • 2026-04-16 — v4: CISA Republication update based on Siemens ProductCERT SSA-186293 advisory
  • 2026-04-14 — v3: Updated remediation to "No Fix is Planned" for SIMOTION SCOUT TIA V5.4 and V5.5
  • 2025-10-14 — v2: Added fix for SINAMICS STARTER V5.7
  • 2025-08-12 — v1: Publication Date

From CISA's machine-readable CSAF 2.0 advisory (JSON).

Vulnerabilities as Stated by the Advisory

CVEWeaknessCVSS v3Details
CVE-2025-40584 CWE-611 Improper Restriction of XML External Entity Reference 5.5 Medium 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.

Mitigation: Do not open untrusted XML files in affected applications

No fix planned: Currently no fix is planned

Vendor fix: Update to V5.6 SP1 HF7 or later version ↗

Affected, fixed & timeline

Affected:

  • SIMOTION SCOUT TIA V5.4 all versions
  • SIMOTION SCOUT TIA V5.5 all versions
  • SIMOTION SCOUT TIA V5.6 <V5.6_SP1_HF7
  • SIMOTION SCOUT TIA V5.7 <V5.7_SP1_HF1
  • SIMOTION SCOUT V5.4 all versions
  • SIMOTION SCOUT V5.5 all versions
  • SIMOTION SCOUT V5.6 <V5.6_SP1_HF7
  • SIMOTION SCOUT V5.7 <V5.7_SP1_HF1
  • SINAMICS STARTER V5.5 all versions
  • SINAMICS STARTER V5.6 all versions
  • SINAMICS STARTER V5.7 <V5.7_HF2

Vendor fix: Update to V5.7 HF2 or later version

Vendor fix: Update to V5.7 SP1 HF1 or later version

Scores and weakness types are as CISA or the republishing vendor stated them in this advisory; the linked CVE pages carry the independently enriched CVSS and SSVC assessments.

News Coverage

No coverage found in monitored research blogs or news feeds.

CVEs Referenced in This Publication

CVECVSSAffected
CVE-2025-40584 5.5 Medium Siemens SIMOTION SCOUT TIA V5.4 A vulnerability has been identified in SIMOTION SCOUT TIA V5.4 (All versions), SIMOTION SCOUT TIA V5.5 (All versions), SIMOTION SCOUT TIA V5.6 (All v…

Named by the advisory itself. Each CVE links to its tracked detail page.

Vendors Named in This Publication

Each vendor links to its Known Exploited Vulnerabilities catalog page. Only vendors that appear in the KEV catalog are listed, either because the publication cites one of their KEV entries or because it names them directly.