Vulnerability · Published Jun 26, 2025 · Assigned by VulnCheck
CVE-2025-34046Fanwei E-Office Unauthenticated File Upload
Critical 10.0
In plain English
A critical-severity unrestricted file upload in E-Office from Shanghai Fanwei Network Technology. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 59% of all known vulnerabilities).
Official description
An unauthenticated file upload vulnerability exists in the Fanwei E-Office <= v9.4 web management interface. The vulnerability affects the /general/index/UploadFile.php endpoint, which improperly validates uploaded files when invoked with certain parameters (uploadType=eoffice_logo or uploadType=theme). An attacker can exploit this flaw by sending a crafted HTTP POST request to upload arbitrary files without requiring authentication. Successful exploitation could enable remote code execution on the affected server, leading to complete compromise of the web application and potentially the underlying system. Exploitation evidence was observed by the Shadowserver Foundation on 2025-02-05 UTC.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Shanghai Fanwei Network Technology | E-Office | 0 – through 9.4 |
Weakness: CWE-434 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
References
- https://www.cnvd.org.cn/flaw/show/CNVD-2021-49104 third-party-advisory
- https://github.com/M0ge/CNVD-2021-49104-Fanwei-Eoffice-fileupload/blob/main/eoffice_fileupload.py exploit
- https://vulncheck.com/advisories/fanwei-eoffice-file-upload third-party-advisory
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cnvd/2021/CNVD-2021-49104.yaml exploit