OPC Foundation UA .NET Standard ConditionRefresh Resource Exhaustion Denial-of-Service Vulnerability. This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of OPC Foundation UA .NET Standard. 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-20505.
Metrics
Affected Vendors & Products
References
History
Thu, 14 Aug 2025 06:30:00 +0000
Type | Values Removed | Values Added |
---|---|---|
First Time appeared |
Opcfoundation
Opcfoundation ua-.netstandard |
|
Weaknesses | NVD-CWE-noinfo | |
CPEs | cpe:2.3:a:opcfoundation:ua-.netstandard:*:*:*:*:*:*:*:* | |
Vendors & Products |
Opcfoundation
Opcfoundation ua-.netstandard |

Status: PUBLISHED
Assigner: zdi
Published: 2024-05-07T22:55:01.898Z
Updated: 2024-08-02T12:09:43.438Z
Reserved: 2023-02-28T17:58:45.477Z
Link: CVE-2023-27321

Updated: 2024-08-02T12:09:43.438Z

Status : Analyzed
Published: 2024-05-07T23:15:15.760
Modified: 2025-08-14T01:37:46.230
Link: CVE-2023-27321

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