Adobe has decided to end the Adobe Commerce 2.4.0-2.4.3 versions. It is to be done under the contract signed between Adobe and Magento. It offers quality fixes to the 2.4 release lineup until the end of the PHP version's support period to optimize our lifecycle policy. Customers can obtain quality repairs if their version is still qualified for quality support by contacting Adobe Commerce Support or using the self-serve Quality Patches Tool. 

Even though a customer's version is qualified for the quality support, Adobe only offers security fixes through the most recent patch or security patch release. Security fixes cannot be backported to earlier minor releases or earlier patch releases within supported minor releases, in contrast to quality fixes. 

Adobe offers hotfixes for all users on a supported version, even if they are not using the most recent patch or security patch release, for