CVE-2026-59693: CWE-754: Improper Check for Unusual or Exceptional Conditions in Siemens Desigo DXR2
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.
AI Analysis
Technical Summary
CVE-2026-59693 is a denial-of-service vulnerability in Siemens Desigo DXR2 and several Desigo PXC devices caused by improper checking for unusual or exceptional conditions (CWE-754). An attacker can send a malformed BACnet packet to cause the affected device to become unresponsive to BACnet queries. Recovery from this state requires a device reset or reboot. The affected versions are all versions prior to V01.21.233.16-7862 for Desigo DXR2 and Desigo PXC3, and prior to V02.21.194.36-2715 for Desigo PXC4, PXC5.E003, PXC5.E24, and PXC7. No official patch or remediation level has been published yet.
Potential Impact
Exploitation results in a denial-of-service condition where the affected Siemens devices stop responding to BACnet queries, disrupting normal device communication and operation. There is no impact on confidentiality or integrity, only availability is affected.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, affected devices may require manual reset or reboot after exploitation to restore functionality.
CVE-2026-59693: CWE-754: Improper Check for Unusual or Exceptional Conditions in Siemens Desigo DXR2
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.
CVSS v3.1
Score 4.3medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-59693 is a denial-of-service vulnerability in Siemens Desigo DXR2 and several Desigo PXC devices caused by improper checking for unusual or exceptional conditions (CWE-754). An attacker can send a malformed BACnet packet to cause the affected device to become unresponsive to BACnet queries. Recovery from this state requires a device reset or reboot. The affected versions are all versions prior to V01.21.233.16-7862 for Desigo DXR2 and Desigo PXC3, and prior to V02.21.194.36-2715 for Desigo PXC4, PXC5.E003, PXC5.E24, and PXC7. No official patch or remediation level has been published yet.
Potential Impact
Exploitation results in a denial-of-service condition where the affected Siemens devices stop responding to BACnet queries, disrupting normal device communication and operation. There is no impact on confidentiality or integrity, only availability is affected.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, affected devices may require manual reset or reboot after exploitation to restore functionality.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- siemens
- Date Reserved
- 2026-07-06T13:50:39.917Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a7b18a1bf8831d539b860fb
Added to database: 08/11/2026, 12:42:09 UTC
Last enriched: 08/11/2026, 13:01:41 UTC
Last updated: 08/12/2026, 02:40:59 UTC
Views: 7
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