What is the severity of CVE-2023-27336?

CVE-2023-27336 has been classified as a denial-of-service vulnerability.

How do I fix CVE-2023-27336?

To fix CVE-2023-27336, ensure you are using the latest version of Softing edgeConnector Siemens that includes the necessary patches.

What type of attack does CVE-2023-27336 enable?

CVE-2023-27336 enables remote attackers to create a denial-of-service condition.

Is authentication required to exploit CVE-2023-27336?

No, authentication is not required to exploit CVE-2023-27336.

Which product is affected by CVE-2023-27336?

CVE-2023-27336 affects the Softing edgeConnector Siemens product.

Vulnerability/
CVE-2023-27336

high

7.5

CWE

476

3/5/2024

2/8/2024

24/2/2025

CVE-2023-27336: (0Day) (Pwn2Own) Softing edgeConnector Siemens OPC UA Server Null Pointer Dereference Denial-of-Service Vulnerability

First published: Fri May 03 2024(Updated: )

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.

Credit: zdi-disclosures@trendmicro.com

Affected Software	Affected Version	How to fix
Softing edgeConnector

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Reference Links

https://www.zerodayinitiative.com/advisories/ZDI-23-1065/

Frequently Asked Questions

What is the severity of CVE-2023-27336?
CVE-2023-27336 has been classified as a denial-of-service vulnerability.
How do I fix CVE-2023-27336?
To fix CVE-2023-27336, ensure you are using the latest version of Softing edgeConnector Siemens that includes the necessary patches.
What type of attack does CVE-2023-27336 enable?
CVE-2023-27336 enables remote attackers to create a denial-of-service condition.
Is authentication required to exploit CVE-2023-27336?
No, authentication is not required to exploit CVE-2023-27336.
Which product is affected by CVE-2023-27336?
CVE-2023-27336 affects the Softing edgeConnector Siemens product.

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