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The implementation of the RPC (Remote Procedure call) communication protocol in the affected products do not properly handle certain malformed RPC messages. An attacker could use this vulnerability to cause a denial of service condition in the RPC server.","A vulnerability has been identified in OpenPCS 7 V9.1 (All versions \u003C V9.1 SP2 UC05), SIMATIC BATCH V9.1 (All versions \u003C V9.1 SP2 UC05), SIMATIC PCS 7 V9.1 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