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.

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00167.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Siemens Desigo DXR2 unknown
Version Status Constraints
0 affected < V01.21.233.16-7862
Siemens Desigo PXC3 unknown
Version Status Constraints
0 affected < V01.21.233.16-7862
Siemens Desigo PXC4 unknown
Version Status Constraints
0 affected < V02.21.194.36-2715
Siemens Desigo PXC5.E003 unknown
Version Status Constraints
0 affected < V02.21.194.36-2715
Siemens Desigo PXC5.E24 unknown
Version Status Constraints
0 affected < V02.21.194.36-2715
Siemens Desigo PXC7 unknown
Version Status Constraints
0 affected < V02.21.194.36-2715

No data.

No data.

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Vendors Products
Siemens Subscribe
Desigo Dxr2 Subscribe
Desigo Pxc3 Subscribe
Desigo Pxc4 Subscribe
Desigo Pxc5 Subscribe
Desigo Pxc7 Subscribe

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Desigo Pxc3 Subscribe
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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://cert-portal.siemens.com/productcert/html/ssa-781903.html cve-icon cve-icon
History

Thu, 13 Aug 2026 11:00:00 +0000

Type Values Removed Values Added
First Time appeared Siemens
Siemens desigo Dxr2
Siemens desigo Pxc3
Siemens desigo Pxc4
Siemens desigo Pxc5
Siemens desigo Pxc7
Vendors & Products Siemens
Siemens desigo Dxr2
Siemens desigo Pxc3
Siemens desigo Pxc4
Siemens desigo Pxc5
Siemens desigo Pxc7

Wed, 12 Aug 2026 00:00:00 +0000

Type Values Removed Values Added
Title Denial of Service via Malformed BACnet Packet in Siemens Desigo Device

Tue, 11 Aug 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Tue, 11 Aug 2026 12:45:00 +0000

Type Values Removed Values Added
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.
Weaknesses CWE-754
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}

cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: siemens

Published:

Updated: 2026-08-11T18:08:58.835Z

Reserved: 2026-07-06T13:50:39.917Z

Link: CVE-2026-59693

cve-icon Vulnrichment

Updated: 2026-08-11T18:08:54.580Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-08-11T13:19:00.477

Modified: 2026-08-28T19:03:37.837

Link: CVE-2026-59693

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-13T10:41:22Z

Weaknesses