CVE-2026-59693: Siemens Desigo DXR2

Medium severity, CVSS 4.3. EPSS: 0.2% chance of exploitation in the next 30 days.

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 products

• Siemens Desigo DXR2: before V01.21.233.16-7862 (fixed in V01.21.233.16-7862)
• Siemens Desigo PXC3: before V01.21.233.16-7862 (fixed in V01.21.233.16-7862)
• Siemens Desigo PXC4: before V02.21.194.36-2715 (fixed in V02.21.194.36-2715)
• Siemens Desigo PXC5.E003: before V02.21.194.36-2715 (fixed in V02.21.194.36-2715)
• Siemens Desigo PXC5.E24: before V02.21.194.36-2715 (fixed in V02.21.194.36-2715)
• Siemens Desigo PXC7: before V02.21.194.36-2715 (fixed in V02.21.194.36-2715)

Published 2026-08-11. Last modified 2026-08-28.