Magento Commerce versions 2.4.2 (and earlier), 2.4.2-p1 (and earlier) and 2.3.7 (and earlier) are affected by an improper input validation vulnerability. An attacker with admin privileges can upload a specially crafted file to bypass file extension restrictions and could lead to remote code execution.

MISC:https://helpx.adobe.com/security/products/magento/apsb21-64.html | URL:https://helpx.adobe.com/security/products/magento/apsb21-64.html