Siemens Desigo DXR and PXC Controllers Vulnerable to BACnet-Based Denial of Service
CVE-2026-59693 allows unauthenticated attackers to disrupt building automation systems; patches released.
Key Takeaways
- CVE-2026-59693 is a medium-severity DoS vulnerability in Siemens Desigo DXR and PXC controllers.
- Exploitation requires local network access and sending a malformed BACnet packet, causing the device to stop responding.
- Recovery from an attack requires a device reset or reboot.
- Siemens has released firmware updates for all affected product lines.
- No active exploitation has been reported as of the advisory date.
Quick answers
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