Advisoriesby IbisSiemensCVE-2026-59693
Siemens Desigo: denial of service
Fix: upgrade to V01.21.233.16-7862 or later (3 fixed versions below)
A vulnerability has been identified in Desigo DXR2 (All versions < V01.21.233.16-7862), Desigo PXC3 (All versions < V01.21.233.16-7862), Desigo PXC4 (All versions < V02.21.194.36-2715), Desigo PXC5.E003 (All versions < V02.21.194.36-2715), Desigo PXC5.E24 (All versions < V02.21.194.36-2715), Desigo PXC7 (All versions < V02.21.194.36-2715). 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.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| Desigo DXR2 Product | < V01.21.233.16-7862 | V01.21.233.16-7862 |
| Desigo PXC3 Product | < V01.21.233.16-7862 | V01.21.233.16-7862 |
| Desigo PXC4 Product | < V02.21.194.36-2715 | V02.21.194.36-2715 |
| Desigo PXC5.E003 Product | < V02.21.194.36-2715 | V02.21.194.36-2715 |
| Desigo PXC5.E24 Product | < V02.21.194.36-2715 | V02.21.194.36-2715 |
| Desigo PXC7 Product | < V02.21.194.36-2715 | V02.21.194.36-2715 |
Details and references
- CVSS 4.0
- CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-754