<p>Unified Automation .NET based OPC UA Server SDK before 3.2.2 used in several industrial products are affected by a similar vulnerability as documented in CVE-2023-27321 for the OPC Foundation UA .NET Standard implementation. A successful attack may lead to high load situation and memory exhaustion, and may block the OPC UA server.</p>
<p>Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens recommends countermeasures for products where fixes are not, or not yet available.</p>
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