Hello @yogesh.srinivas
The Eikon Data API is the Python library, so it does not use the Apache Log4j. The Real-Time SDK uses the Java Logging API by default, not the Log4j. It means both Eikon Data API and Refinitiv Real-Time SDKs do not have the Log4j Vulnerabilities.
However, Refinitiv has a lot of APIs and Products, so I highly recommend you contact the Production teams directly to clarify Log4j with their products.