CVE-2023-27336

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector : AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.zerodayinitiative.com/advisories/ZDI-23-1065/	Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-23-1065/	Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:softing:edgeaggregator::::::::
	cpe:2.3:a:softing:edgeconnector::::::::
	cpe:2.3:a:softing:secure_integration_server::::::::

History

13 Aug 2025, 00:04

Type	Values Removed	Values Added
First Time		Softing edgeaggregator Softing edgeconnector Softing secure Integration Server Softing
References	~~() https://www.zerodayinitiative.com/advisories/ZDI-23-1065/ -~~	() https://www.zerodayinitiative.com/advisories/ZDI-23-1065/ - Third Party Advisory
CPE		cpe:2.3:a:softing:edgeconnector:::::::: cpe:2.3:a:softing:secure_integration_server:::::::: cpe:2.3:a:softing:edgeaggregator::::::::

Information

Published : 2024-05-03 02:15

Updated : 2025-08-13 00:04

NVD link : CVE-2023-27336

Mitre link : CVE-2023-27336

CVE.ORG link : CVE-2023-27336

JSON object : View

Products Affected

softing

edgeaggregator
edgeconnector
secure_integration_server

CWE

CWE-476

NULL Pointer Dereference

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