CVE-2021-40873
HIGHSofting Industrial Automation OPC UA C++ SDK <5.66 - DoS
Title source: llmDescription
An issue was discovered in Softing Industrial Automation OPC UA C++ SDK before 5.66, and uaToolkit Embedded before 1.40. Remote attackers to cause a denial of service (DoS) by sending crafted messages to a client or server. The server process may crash unexpectedly because of a double free, and must be restarted.
References (2)
Core 2
Core References
Vendor Advisory x_refsource_misc
https://industrial.softing.com/
Vendor Advisory x_refsource_misc
https://industrial.softing.com/fileadmin/sof-files/pdf/ia/support/Security_Bulletin_CVE-2021-40873.pdf
Scores
CVSS v3
7.5
EPSS
0.0127
EPSS Percentile
65.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-415
Status
published
Products (7)
softing/datafeed_opc_suite
< 5.18
softing/edgeconnector
< 2.31
softing/opc
< 5.66
softing/secure_integration_server
< 1.22
softing/th_scope
3.5
softing/uagates
< 1.73
softing/uatoolkit_embedded
< 1.40
Published
Nov 10, 2021
Tracked Since
Feb 18, 2026