ICSA-25-254-02: Siemens SIMATIC Virtualization as a Service (SIVaaS)
CISA advisory · released 2025-09-09
Source record Collected from CISA's CSAF advisory feed
- Distribution label in the document: TLP:WHITE
- Revision 1, 2025-09-09 (final)
CISA's summary
Summary: SIMATIC Virtualization as a Service (SIVaaS) is affected by a vulnerability which exposes a network share without any authentication. This could allow an attacker to access or alter sensitive data without proper authorization. Siemens recommends to contact technical support to fix the vulnerability.
Products, as the advisory lists them
| Vendor | Product | Version |
|---|---|---|
| Siemens | SIMATIC Virtualization as a Service (SIVaaS) | vers:all/* |
DeSpy has not checked any unit, hardware revision or firmware.
Vulnerabilities in this advisory
- CVE-2025-40804 — CVE-2025-40804 · CWE-732
The affected application exposes a network share without any authentication. This could allow an attacker to access or alter sensitive data without proper authorization.
Acknowledgments, as the advisory lists them
- Siemens ProductCERT: reporting this vulnerability to CISA.
- Tim Dijkman, Powerspex: coordinating disclosure with Siemens.
The advisory's legal notice
The use of Siemens Security Advisories is subject to the terms and conditions listed on: https://www.siemens.com/productcert/terms-of-use.
Sources
DeSpy's copy of this version is dated 2026-09-28.
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