CVE-2023-27336: Softing Edgeaggregator

High severity, CVSS 7.5. EPSS: 0.8% chance of exploitation in the next 30 days.

Softing edgeConnector Siemens OPC UA Server Null Pointer Dereference 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 client certificates. The issue results from dereferencing a NULL pointer. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-20508.

Affected products

• Softing Edgeaggregator: before 3.70 (fixed in 3.70)
• Softing Edgeconnector: before 3.70 (fixed in 3.70)
• Softing Secure Integration Server: before 1.30 (fixed in 1.30)

Published 2024-05-03. Last modified 2026-06-17.