Mozilla Firefox Extended Support Release (ESR) 128 is now certified as both a Windows-based client browser and macOS-based client browser for Oracle E-Business Suite (EBS) Release 12.2.
Firefox ESR 128 is certified for both Oracle E-Business Suite web-based (OA Framework/HTML) and Oracle Forms/Java-based interfaces provided the minimum requirements for 
deployment are met. For additional information refer to the following My Oracle Support knowledge documents:
- Recommended Browsers for Oracle E-Business Suite Releases 12.2 and 12.1 (MOS Note 389422.1)
- Oracle E-Business Suite Release Notes for macOS Clients, Release 12 (MOS Note 1533334.1)
- Using Java Web Start with Oracle E-Business Suite (MOS Note 2188898.1)
What is Mozilla Firefox ESR?
Mozilla offers Extended Support Releases based on an official release of Firefox for organizations that are unable to mass-deploy new consumer-oriented versions of Firefox every four weeks. For more information see the following:
EBS Compatibility with Firefox ESR Point Releases
Mozilla may release new point release updates to address high-risk/high-impact security issues. These updates are considered to be certified with the EBS 12.2 on the day that they’re released. You do not need to wait for a certification from Oracle before deploying these new Firefox ESR security updates.
References
- Recommended Browsers for Oracle E-Business Suite Releases 12.2 and 12.1 (MOS Note 389422.1)
- Oracle E-Business Suite Release Notes for macOS Clients, Release 12 (MOS Note 1533334.1)
- Using Java Web Start with Oracle E-Business Suite (MOS Note 2188898.1)
- FAQ: Essentials of Java Usage in Oracle E-Business Suite (MOS Note 2510500.1)