CVEvulnerability

CVE-2023-27321

7.5 HIGH Published 2024-05-07 Modified 2026-06-17 Official page ↗
Status
Analyzed
Published
2024-05-07
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.0 ([email protected])
7.5 HIGH — CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-400

Description

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.

Affected configurations

• opcfoundation ua-.netstandard (< 1.4.371.86)

Related

Weakness · CWE (1)

  • CWE-400 Uncontrolled Resource Consumption weakness

References