VULNERABILITY INTELLIGENCE
CVE-2023-53956
CVSS score8.8 HIGH
EPSS probability0.77%
CISA KEVNot currently listed
Published2025-12-19
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Description
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.
Weakness classification
- disclosure@vulncheck.com: CWE-434