CVE-2021-41545

HIGH

Desigo DXR2-PXC5 < V01.21.142.5-22 - DoS

Title source: llm

Description

A vulnerability has been identified in Desigo DXR2 (All versions < V01.21.142.5-22), Desigo PXC3 (All versions < V01.21.142.4-18), Desigo PXC4 (All versions < V02.20.142.10-10884), Desigo PXC5 (All versions < V02.20.142.10-10884). When the controller receives a specific BACnet protocol packet, an exception causes the BACnet communication function to go into a “out of work” state and could result in the controller going into a “factory reset” state.

References (1)

[Vendor Advisory] https://cert-portal.siemens.com/productcert/pdf/ssa-662649.pdf

Scores

CVSS v3 7.5

EPSS 0.0039

EPSS Percentile 59.6%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Classification

CWE

CWE-248

Status published

Affected Products (4)

siemens/desigo_dxr2_firmware < 01.21.142.5-22

siemens/desigo_pxc3_firmware < 01.21.142.4-18

siemens/desigo_pxc4_firmware < 02.20.142.10-10884

siemens/desigo_pxc5_firmware < 02.20.142.10-10884

Timeline

Published May 10, 2022

Tracked Since Feb 18, 2026