SYT-2023-1: Uncontrolled resource consumption vulnerability in OPC UA C++ SDK, edgeConnector, edgeAggregator and Secure Integration Server

Publisher: Softing Industrial Automation GmbH Document category: csaf_security_advisory
Initial release date: 2023-05-06T07:00:00.000Z Engine: Secvisogram .2.2.15
Current release date: 2023-11-30T17:12:57.042Z Build Date: 2023-11-30T17:12:57.042Z
Current version: 2.0.0 Status: final
CVSSv3.1 Base Score: 7.5 Severity: high
Original language: en-US Language:
Also referred to:



If many method call requests are send with an array of methods to execute, the server may crash unexpectedly and must be restarted.

CWE: CWE-400:Uncontrolled Resource Consumption
Discovery date: 2022-10-14T10:00:00.000Z

Product status

Known affected
Product CVSS-Vector CVSS Base Score
Softing OPC UA C++ SDK <= 6.20 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H 7.5
Softing edgeConnector <= V3.60 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H 7.5
Softing edgeAggregator <= V3.60 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H 7.5
Softing Secure Integration Server <= V1.22 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H 7.5



Disable the posibility to establish unauthenticated sessions to the OPC UA server, because the atttack works on an established OPC UA session.

For products:


Softing Industrial Automation GmbH


Softing PSIRT - contact us at [email protected]

Revision history

Version Date of the revision Summary of the revision
1.0.0 2023-06-05T07:00:00.000Z Initial version
2.0.0 2023-11-30T17:12:57.042Z Fixes for edgeConnector, edgeAggregator and Secure Integration Server


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