High severity7.5NVD Advisory· Published Apr 4, 2022· Updated Jun 17, 2026
CVE-2021-32994
CVE-2021-32994
Description
Softing OPC UA C++ SDK (Software Development Kit) versions from 5.59 to 5.64 exported library functions don't properly validate received extension objects, which may allow an attacker to crash the software by sending a variety of specially crafted packets to access several unexpected memory locations.
Affected products
3- cpe:2.3:a:softing:opc_ua_c\+\+_software_development_kit:*:*:*:*:*:*:*:*Range: >=5.59.0,<5.65.0
- Range: 5.59 - 5.64
- Softing/OPC UA C++ SDK (Software Development Kit)v5Range: 5.59
Patches
Vulnerability mechanics
References
1- www.cisa.gov/uscert/ics/advisories/icsa-21-168-02nvdThird Party AdvisoryUS Government Resource
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