(common in adult industry) – you must migrate to a new script. There is no safe way to patch an unsupported script long-term.
Operating a directory using outdated or "nulled" (pirated) software carries devastating consequences: Extortion and Ransomware escort directory script patched
Rewrite your media upload modules to enforce strict white-lists, rename files uniquely, and store them outside the execution context of the web root. (common in adult industry) – you must migrate
Compress your entire web root directory via SSH: rename files uniquely