Firefox could be made to load attacker-supplied DLL files from the installation directory. This required an attacker that is already capable of placing files in the installation directory. *Note: This issue only affected Windows operating systems. Other operating systems are unaffected.* External Reference: https://www.mozilla.org/en-US/security/advisories/mfsa2020-33/#CVE-2020-15657
Acknowledgments: Name: the Mozilla project Upstream: Steve Nyan Lin