CVE-2024-40125: Closed-Loop Cless Server

Critical severity, CVSS 9.8. EPSS: 0.9% chance of exploitation in the next 30 days.

An arbitrary file upload vulnerability in the Media Manager function of Closed-Loop Technology CLESS Server v4.5.2 allows attackers to execute arbitrary code via uploading a crafted PHP file to the upload endpoint.

Affected products

• Closed-Loop Cless Server: version 4.5.2 only

Published 2024-09-19. Last modified 2026-06-17.