Magento continues to deliver different SUPEE patches and form redesigns to give new highlights and security updates.
After the send-off of Magento 2, Magento has quit presenting new elements yet at the same time, it continues to deliver patches to shield stores against expected dangers and security assaults.
Magento delivered the Security Patch Install SUPEE 10266 With or Without SSH for Magento to conquer security issues like unapproved information spill and confirmed Admin client remote code execution weaknesses.
For more info: https://meetanshi.com/blog/install-magento-supee-10266-with-or-without-ssh/