ICSA-26-225-08: Siemens Desigo DXR and PXC Controllers
CISA advisory · released 2026-08-11
Source record Collected from CISA's CSAF advisory feed
- Distribution label in the document: TLP:WHITE
- Revision 2, 2026-08-13 (final)
CISA's summary
Summary: A vulnerability in Desigo DXR and PXC controllers has been identified that could allow an attacker to cause denial of service conditions by sending malformed BACnet packets. Recovery requires a device reset or reboot to restore normal functionality. Siemens has released new versions for the affected products and recommends to update to the latest versions.
Products, as the advisory lists them
| Vendor | Product | Version |
|---|---|---|
| Siemens | Desigo DXR2 | vers:intdot/<01.21.233.16-7862 |
| Siemens | Desigo PXC3 | vers:intdot/<01.21.233.16-7862 |
| Siemens | Desigo PXC4 | vers:intdot/<02.21.194.36-2715 |
| Siemens | Desigo PXC5.E003 | vers:intdot/<02.21.194.36-2715 |
| Siemens | Desigo PXC5.E24 | vers:intdot/<02.21.194.36-2715 |
| Siemens | Desigo PXC7 | vers:intdot/<02.21.194.36-2715 |
DeSpy has not checked any unit, hardware revision or firmware.
Vulnerabilities in this advisory
- CVE-2026-59693 — CVE-2026-59693 · CWE-754
The affected devices are vulnerable to a denial-of-service (DoS) vulnerability. An attacker can exploit this issue by sending a malformed BACnet packet, causing the device to stop responding to BACnet queries. Recovery requires a device reset or reboot to restore normal functionality.
Acknowledgments, as the advisory lists them
- Thomas EBI, Sauter: reported this vulnerability to 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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