Flatnux 2021-03.25 Authenticated File Upload Remote Code Execution
Flatnux 2021-03.25 contains an authenticated file upload vulnerability that allows administrative users to upload arbitrary PHP files through the file manager. Attackers with admin credentials can upload malicious PHP scripts to the web root directory, enabling remote code execution on the server.
Severity high: primary CNA CVSS 8.7 v4.0 (worst CNA-provided scenario) Not listed in this KEV snapshot. Forecast present in this snapshot.
Published 2025-12-19T21:05:52.196Z. Updated 2026-04-07T14:08:11.144Z.