What’s Vulnerable › Vulnerabilities

CVE-2026-59693

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-11 · updated 2026-08-28
• Weakness: CWE-754

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.

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

How to fix

Upgrade to a fixed version: Siemens Desigo DXR2 V01.21.233.16-7862; Siemens Desigo PXC3 V01.21.233.16-7862; Siemens Desigo PXC4 V02.21.194.36-2715; Siemens Desigo PXC5.E003 V02.21.194.36-2715; Siemens Desigo PXC5.E24 V02.21.194.36-2715; Siemens Desigo PXC7 V02.21.194.36-2715. Check the vendor advisory for mitigations.

References

• https://cert-portal.siemens.com/productcert/html/ssa-781903.html

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