High severity7.5NVD Advisory· Published Nov 10, 2021· Updated Jun 17, 2026

CVE-2021-40871

Description

An issue was discovered in Softing Industrial Automation OPC UA C++ SDK before 5.66. Remote attackers to cause a denial of service (DoS) by sending crafted messages to a OPC/UA client. The client process may crash unexpectedly because of a wrong type cast, and must be restarted.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Softx/Datafeed Opc Suite
cpe:2.3:a:softing:datafeed_opc_suite:*:*:*:*:*:*:*:*
Range: <5.18
Softx/Opc
cpe:2.3:a:softing:opc:*:*:*:*:*:*:*:*
Range: <5.66
Softx/Secure Integration Server
cpe:2.3:a:softing:secure_integration_server:*:*:*:*:*:*:*:*
Range: <=1.22
Softx/Th Scope
cpe:2.3:a:softing:th_scope:*:*:*:*:*:*:*:*
Range: >=3.5
Softing Industrial Automation/OPC UA C++ SDKdescription
Softing Industrial Automation/OPC UA C++ SDKllm-create
Range: <5.66

Patches

Vulnerability mechanics

References

industrial.softing.comnvdVendor Advisory
industrial.softing.com/fileadmin/sof-files/pdf/ia/support/Security_Bulletin-CVE-2021-40871.pdfnvdVendor Advisory

News mentions

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