Implementing magento patch SUPEE-10266

Upload patch files in the root of Magento located at .

Magento Open Source Download Page > Release Archive Tab > Magento Open Source Patches – 1.x Section
Make one file with the name of patch.php, write following code in it.

[php]
passthru(“/bin/bash PATCH_SUPEE-10266.sh”);
echo “Done”;
[/php]

replace the file name in it, upload it in the root and run the file from the browser.