CVE-2023-53956 - CVE House
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Status published High CVE-2023-53956

Flatnux 2021-03.25 Authenticated File Upload Remote Code Execution

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Ömer Hasan Durmuş

Affected Vendor

Affected Software

flatnux
Vulnerable Versions:
2021-03.25

Timeline

Official Publish: December 19th, 2025
Last Modified: April 7th, 2026
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)