Arbitrary file upload in Iest Winplus
CVE-2025-41347
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'.
Vulnerability class: Unrestricted File Upload
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (25.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 25.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Iest Winplus — versions 24.11.27
- Informatica Del Este Winplus — versions 24.11.27
Weakness classification (CWE)
References
- www.incibe.es/en/incibe-cert/notices/aviso/stored-cross-site-scripting-xss-winp… (Third Party Advisory, patch)
Frequently asked questions
- What is CVE-2025-41347?
- CVE-2025-41347 is a critical-severity vulnerability in Iest Winplus, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2025-11-18.
- How severe is CVE-2025-41347?
- Critical severity. CVSS v3 base score is 9.8 out of 10.