High severity7.5NVD Advisory· Published May 3, 2024· Updated Jun 17, 2026
CVE-2023-27334
CVE-2023-27334
Description
Softing edgeConnector Siemens ConditionRefresh Resource Exhaustion Denial-of-Service Vulnerability. This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Softing edgeConnector Siemens. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the handling of OPC UA ConditionRefresh requests. By sending a large number of requests, an attacker can consume all available resources on the server. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-20498.
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Affected products
6- cpe:2.3:a:softing:opc_ua_c\+\+_software_development_kit:*:*:*:*:*:*:*:*Range: <6.20.1
- cpe:2.3:a:softing:secure_integration_server:*:*:*:*:*:*:*:*Range: <1.30
(expand)+ 1 more
- (no CPE)
- (no CPE)range: 3.40
Patches
Vulnerability mechanics
References
2- industrial.softing.com/fileadmin/psirt/downloads/syt-2023-1.htmlnvdVendor Advisory
- www.zerodayinitiative.com/advisories/ZDI-23-1054/nvdThird Party Advisory
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