SSA-800126 V1.2 (Last Update: 2025-12-09): Deserialization Vulnerability in Siemens Engineering Platforms before V20

Risk Summary

<p>Affected products do not properly sanitize user-controllable input when parsing files. This could allow an attacker to cause a type confusion and execute arbitrary code within the affected application.</p> <p>Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens is preparing further fix versions and recommends specific countermeasures for products where fixes are not, or not yet available.</p> <p>Siemens has released products based on the Totally Integrated Automation Portal (TIA Portal) V20 which are not affected by CVE-2024-49849. See the chapter “Additional Information” below for more details.</p>

CVEs (1)

Remediations

• Refer to Siemens ProductCERT advisory for patch and remediation guidance.

Affected Vendors

Affected Products (1)