ICSA-21-257-17: Siemens Desigo CC Family
CISA advisory · released 2021-09-14
Source record Collected from CISA's CSAF advisory feed
- Distribution label in the document: TLP:WHITE
- Revision 2, 2025-05-06 (final)
CISA's summary
Summary: Desigo CC, Desigo CC Compact and Cerberus DMS that use CCOM communication component hosted in IIS contain a deserialisation vulnerability that could allow an unauthenticated attacker to perform remote code execution. Only those systems that use Windows App and/or IE XBAP Web Client are affected. Regular installed clients and the new HTML5 Flex Clients are not impacted by this vulnerability. Note that the risk of this vulnerability being exploited is particularly high for any Desigo CC system that is connected directly to the Internet. For systems not accessible directly from the Internet, an attacker would need to have access to the local network to exploit this vulnerability. Siemens has released updates for the affected products and recommends to update to the latest versions.
Products, as the advisory lists them
| Vendor | Product | Version |
|---|---|---|
| Siemens | Cerberus DMS V4.0 | vers:all/* |
| Siemens | Cerberus DMS V4.1 | vers:all/* |
| Siemens | Cerberus DMS V4.2 | vers:all/* |
| Siemens | Cerberus DMS V5.0 | <v5.0_QU1 |
| Siemens | Desigo CC Compact V4.0 | vers:all/* |
| Siemens | Desigo CC Compact V4.1 | vers:all/* |
| Siemens | Desigo CC Compact V4.2 | vers:all/* |
| Siemens | Desigo CC Compact V5.0 | <V5.0_QU1 |
| Siemens | Desigo CC V4.0 | vers:all/* |
| Siemens | Desigo CC V4.1 | vers:all/* |
| Siemens | Desigo CC V4.2 | vers:all/* |
| Siemens | Desigo CC V5.0 | <V5.0_QU1 |
DeSpy has not checked any unit, hardware revision or firmware.
Vulnerabilities in this advisory
- CVE-2021-37181 — CVE-2021-37181 · CWE-502
The application deserialises untrusted data without sufficient validations, that could result in an arbitrary deserialization. This could allow an unauthenticated attacker to execute code in the affected system. The CCOM communication component used for Windows App / Click-Once and IE Web / XBAP client connectivity are affected by the vulnerability.
Acknowledgments, as the advisory lists them
- Siemens ProductCERT: reporting this vulnerability to CISA.
- Markus Wulftange, Code White GmbH: reporting the vulnerability
The advisory's legal notice
Siemens Security Advisories are subject to the terms and conditions contained in Siemens' underlying license terms or other applicable agreements previously agreed to with Siemens (hereinafter "License Terms"). To the extent applicable to information, software or documentation made available in or through a Siemens Security Advisory, the Terms of Use of Siemens' Global Website (https://www.siemens.com/terms_of_use, hereinafter "Terms of Use"), in particular Sections 8-10 of the Terms of Use, shall apply additionally. In case of conflicts, the License Terms shall prevail over the Terms of Use.
Sources
DeSpy's copy of this version is dated 2026-09-28.
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