High severity7.5NVD Advisory· Published Mar 11, 2022· Updated Jun 17, 2026
CVE-2021-42577
CVE-2021-42577
Description
An issue was discovered in Softing OPC UA C++ SDK before 5.70. A malformed OPC/UA message abort packet makes the client crash with a NULL pointer dereference.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
5- cpe:2.3:a:softing:opc_ua_c\+\+_software_development_kit:*:*:*:*:*:*:*:*Range: <5.70.0
- cpe:2.3:a:softing:secure_integration_server:*:*:*:*:*:*:*:*Range: <=1.22
- Softing/OPC UA C++ SDKdescription
- Range: <5.70
Patches
Vulnerability mechanics
References
2- industrial.softing.com/fileadmin/sof-files/pdf/ia/support/Security_Bulletin_CVE-2021-42577.pdfnvdVendor Advisory
- softing.comnvdVendor Advisory
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