SIEMENS-SSA-711309 · Published 2025-11-11 · View on Siemens ProductCERT ↗

SSA-711309 V2.5 (Last Update: 2025-11-11): Denial of Service Vulnerability in the OPC UA Implementations of SIMATIC Products

CVSS N/A MEDIUM

Risk Summary

<p>The OPC UA implementations (ANSI C and C++) as used in several SIMATIC products contain a denial of service vulnerability that could allow an unauthenticated remote attacker to create a denial of service condition by sending a specially crafted certificate.</p> <p>Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens recommends specific countermeasures for products where fixes are not, or not yet available.</p>

Remediations

Refer to Siemens ProductCERT advisory for patch and remediation guidance.

Affected Vendors

Siemens

Affected Products (1)

Siemens · SSA-711309 V2.5 (Last Update: 2025-11-11): Denial of Service Vulnerability in the OPC UA Implementations of SIMATIC Products See advisory

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