CVE-2026-59693 Denial of service in Desigo DXR2
Attackers can cause denial of service in Siemens Desigo controllers by sending malformed BACnet packets, requiring a reboot to recover.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-59693?
CVE-2026-59693 is a medium-severity denial of service vulnerability in Siemens Desigo DXR2, published on 11 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Weakness: CWE-754
Which versions are affected by CVE-2026-59693?
How do I fix CVE-2026-59693?
No fix has been published for CVE-2026-59693 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-59693 being exploited?
There is no known exploitation of CVE-2026-59693 in the wild and no public exploit code.
Sources
Also known as GHSA-m7fp-mx3h-5426.