ssa-493396

About this tag
The tag ssa-493396 refers to a Siemens ProductCERT security advisory addressing a deserialization vulnerability (CVE-2025-40759) in TIA Portal engineering components. This vulnerability affects products such as SIMATIC S7-PLCSIM V17, STEP 7, and WinCC variants. Siemens has assigned a CVSS v3.1 base score of 7.8 and a CVSS v4 base score of 8.5, with CISA noting low attack complexity. Exploitation requires opening malicious project files rather than direct Internet-based attacks. The advisory is relevant for users of Siemens industrial automation software who need to assess and mitigate this security risk.

  1. Siemens SSA-493396 Deserialization CVE-2025-40759 in TIA Portal

    Siemens ProductCERT has published SSA‑493396 — a deserialization vulnerability (CVE‑2025‑40759) that affects a broad swath of TIA‑Portal engineering components, including SIMATIC S7‑PLCSIM V17, STEP 7, and WinCC variants; Siemens assigns a CVSS v3.1 base score of 7.8 and a CVSS v4 base score of...
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    • application whitelisting cisa cve-2025-40759 cvss cwe-502 deserialization edr mitigation network segmentation s7-plcsim-v17 siemens simatic ssa-493396 step-7 tia portal virtualization vulnerability wincc
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    • Forum: Security Alerts