Siemens SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP

CVE-2021-41617CVE-2023-28531CVE-2023-51384CVE-2023-52927CVE-2024-26783CVE-2024-27056CVE-2024-28956CVE-2024-36903CVE-2024-36927CVE-2024-42079CVE-2024-46786CVE-2024-47736CVE-2024-47809CVE-2024-49968CVE-2024-49994CVE-2024-49998CVE-2024-50014CVE-2024-50063CVE-2024-50164CVE-2024-50298CVE-2024-53124CVE-2024-53170CVE-2024-54458CVE-2024-56631CVE-2024-56703CVE-2024-56719CVE-2024-57917CVE-2024-57924CVE-2024-57973CVE-2024-57977CVE-2024-57979CVE-2024-58011CVE-2024-58016CVE-2024-58020CVE-2024-58056CVE-2024-58058CVE-2024-58061CVE-2024-58086CVE-2025-21645CVE-2025-21648CVE-2025-21655CVE-2025-21676CVE-2025-21682CVE-2025-21702CVE-2025-21705CVE-2025-21706CVE-2025-21707CVE-2025-21718CVE-2025-21731CVE-2025-21745CVE-2025-21758CVE-2025-21760CVE-2025-21764CVE-2025-21765CVE-2025-21780CVE-2025-21795CVE-2025-21796CVE-2025-21802CVE-2025-21814CVE-2025-21846CVE-2025-21853CVE-2025-21861CVE-2025-21864CVE-2025-21867CVE-2025-21875CVE-2025-21887CVE-2025-21913CVE-2025-21919CVE-2025-21925CVE-2025-21926CVE-2025-21938CVE-2025-21959CVE-2025-21999CVE-2025-22005CVE-2025-22015CVE-2025-22055CVE-2025-22056CVE-2025-22060CVE-2025-22083CVE-2025-22090CVE-2025-22095CVE-2025-22107CVE-2025-22111CVE-2025-22121CVE-2025-23136CVE-2025-23143CVE-2025-37785CVE-2025-37909CVE-2025-37917CVE-2025-37945CVE-2025-37959CVE-2025-37964CVE-2025-37972

July 28, 2026 · CISA (US-CERT) · Severity: HIGH

Multiple vulnerabilities have been identified in the GNU/Linux subsystem of SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP firmware version V3.1.6. Siemens is preparing fix versions and recommends specific countermeasures for products where fixes are not yet available. The affected product is deployed worldwide in critical manufacturing sectors.

Key Takeaways

Over 80 vulnerabilities affect the GNU/Linux subsystem of SIMATIC S7-1500 CPU 1518 firmware V3.1.6.
Siemens is preparing fix versions and recommends countermeasures for products without available fixes.
The affected CPU model is used in critical manufacturing sectors worldwide, requiring urgent attention.