ICSA-26-043-04: Siemens Desigo CC Product Family and SENTRON Powermanager

CISA's summary

Summary: Versions V6.0 through V8 QU1 of the Desigo CC product family (Desigo CC, Desigo CC Compact, Desigo CC Connect, Cerberus DMS), as well as the Desigo CC-based SENTRON Powermanager, are affected by a vulnerability in the underlying third-party component WIBU Systems CodeMeter Runtime. Successful exploitation of this vulnerability could lead to code execution in the context of the current process. Siemens has released instructions how to update the CodeMeter Runtime component and recommends to apply the update on affected systems.

Products, as the advisory lists them

DeSpy has not checked any unit, hardware revision or firmware.

Vulnerabilities in this advisory

• CVE-2023-38545 — CVE-2023-38545 · CWE-122

  This flaw makes curl overflow a heap based buffer in the SOCKS5 proxy handshake. When curl is asked to pass along the hostname to the SOCKS5 proxy to allow that to resolve the address instead of it getting done by curl itself, the maximum length that hostname can be is 255 bytes. If the hostname is detected to be longer than 255 bytes, curl switches to local name resolving and instead passes on the resolved address only to the proxy. Due to a bug, the local variable that means "let the host resolve the name" could get the wrong value during a slow SOCKS5 handshake, and contrary to the intention, copy the too long hostname to the target buffer instead of copying just the resolved address there.

Acknowledgments, as the advisory lists them

• Siemens ProductCERT: reported this vulnerability to CISA.

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

• The advisory at cisa.gov
• The CSAF document (JSON)

DeSpy's copy of this version is dated 2026-09-28.