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Original release date: November 9, 2021

CISA has released an Industrial Control Systems (ICS) advisory detailing multiple vulnerabilities found in Siemens Nucleus Real-Time Operating Systems (RTOS) and supporting libraries. A remote attacker could exploit some of these vulnerabilities to take control of an affected system.

CISA encourages users and administrators to review ICS Advisory: ICSA-21-313-03 Siemens Nucleus RTOS TCP/IP Stack for more information and apply the necessary mitigations.

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