CVE-2025-41347: Iest Winplus

Critical severity, CVSS 9.8. EPSS: 0.3% chance of exploitation in the next 30 days.

Unlimited upload vulnerability for dangerous file types in WinPlus v24.11.27 from Informática del Este. This vulnerability allows an attacker to upload a 'webshell' by sending a POST request to '/WinplusPortal/ws/sWinplus.svc/json/uploadfile'.

Affected products

• Iest Winplus: version 24.11.27 only

Published 2025-11-18. Last modified 2026-06-17.