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CVE-2025-41347VulnerabilityPublished Updated

CVE-2025-41347: Informatica del Este WinPlus · Unrestricted File Upload

Affects Informatica del Este WinPlusSource CVE Database V5

0

Not known to be exploited · CVSS 8.7 High.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 4.0 base score
8.7High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 30% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 18 Nov 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

What to do

Affected software

ProductAffectedFixed in
Informatica del Este WinPlusAffected
  • =24.11.27
Fixed in–

AI-suggested

Until an official patch is released, European organizations should implement the following specific mitigations: 1) Restrict access to the '/WinplusPortal/ws/sWinplus.svc/json/uploadfile' endpoint using network segmentation, firewalls, or web application firewalls (WAF) to limit exposure to trusted IP addresses only. 2) Implement strict file type validation and filtering at the network or application layer to block uploads of executable or script files, particularly those commonly used for webshells (e.g., .php, .asp, .aspx, .jsp). 3) Monitor web server logs and network traffic for unusual POST requests or file uploads targeting the vulnerable endpoint. 4) Employ intrusion detection/prevention systems (IDS/IPS) with signatures or heuristics to detect exploitation attempts. 5) Enforce the principle of least privilege on the WinPlus application and underlying operating system to limit the impact of a successful exploit. 6) Conduct regular security audits and penetration testing focusing on file upload functionalities. 7) Prepare incident response plans specific to webshell detection and removal. 8) Engage with Informatica del Este for timely updates and patches, and plan for rapid deployment once available. 9) Educate IT and security teams about this vulnerability and its indicators of compromise to enhance detection and response capabilities.

Description

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'.

References

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