ICSA-25-112-02: Siemens TeleControl Server Basic
CISA advisory · released 2025-04-16
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: TeleControl Server Basic before V3.1.2.2 contains a Improper Handling of Length Parameter Inconsistency Vulnerability that could allow an attacker to cause the application to allocate exhaustive amounts of memory and subsequently create a denial of service condition. Siemens has released a new version for TeleControl Server Basic and recommends to update to the latest version.
Products, as the advisory lists them
| Vendor | Product | Version |
|---|---|---|
| Siemens | TeleControl Server Basic | <V3.1.2.2 |
DeSpy has not checked any unit, hardware revision or firmware.
Vulnerabilities in this advisory
- CVE-2025-29931 — CVE-2025-29931 · CWE-130
The affected product does not properly validate a length field in a serialized message which it uses to determine the amount of memory to be allocated for deserialization. This could allow an unauthenticated remote attacker to cause the application to allocate exhaustive amounts of memory and subsequently create a partial denial of service condition. Successful exploitation is only possible in redundant Telecontrol Server Basic setups and only if the connection between the redundant servers has been disrupted.
Acknowledgments, as the advisory lists them
- Jin Huang, ADLab of Venustech: coordinating this vulnerability 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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