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Oracle Field Service and Critical Patch Update notifications
Answer ID 12059   |   Last Review Date 01/21/2022

I've received Critical Patch Update notification - what should I do?

Oracle Field Service (OFS) 
Critical Patch Updates are collections of security fixes for Oracle products and released on quarterly basis. A Critical Patch Update is a collection of patches for multiple security vulnerabilities. These patches address vulnerabilities in Oracle code and in third-party components included in Oracle products. These patches are usually cumulative, but each advisory describes only the security patches added since the previous Critical Patch Update Advisory. Thus, prior Critical Patch Update advisories should be reviewed for information regarding earlier published security patches. 
Oracle continues to periodically receive reports of attempts to maliciously exploit vulnerabilities for which Oracle has already released security patches. In some instances, it has been reported that attackers have been successful because targeted customers had failed to apply available Oracle patches. Oracle therefore strongly recommends that customers remain on actively-supported versions and apply Critical Patch Update security patches without delay.
Oracle Field Service is distributed by the SaaS model and all required patches will be applied by Oracle's team. 
You have to review the list of products and apply recommended patches if you are using Oracle products other than Field Service.