Magento discharges security patches every once in a while to guarantee that your web-based Magento stores are protected enough from any possible assaults or hacks. Each storekeeper ought to go to lengths to shield their store from such security issues.
Magento delivered Security Fix SUPEE 1533 to defeat issues like:
~ Empower an assailant to execute erratic code on your Magento server.
~ Make documents with a .csv expansion, make writable indexes, and change the consent of existing records to world-writable (777).
The capacity to run code with a .csv expansion can be hurtful, thus it is critical to Install SUPEE 1533 with or without SSH for Magento.
For more info: https://meetanshi.com/blog/install-magento-supee-1533-with-or-without-ssh/