Vulnerability · Published Apr 30, 2026 · Assigned by VulnCheck
CVE-2022-50993Weaver E-office < 10.0_20221201 Unauthenticated Arbitrary File Read via XmlRpcServlet
Critical 9.8
In plain English
A critical-severity unrestricted file upload in E-office from Weaver Network Co., Ltd.. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 56% of all known vulnerabilities).
Official description
Weaver (Fanwei) E-office versions prior to 10.0_20221201 contain an unauthenticated arbitrary file upload vulnerability in the OfficeServer.php endpoint that allows remote attackers to upload malicious files by sending multipart POST requests with arbitrary filenames and disguised content types. Attackers can upload PHP webshells to the Document directory and execute them via HTTP GET requests to achieve remote code execution as the web server user. Exploitation evidence was first observed by the Shadowserver Foundation on 2022-10-10 (UTC).
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Weaver Network Co., Ltd. | E-office | 0 – before 10.0_20221201 |
Weakness: CWE-434 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://service.e-office.cn/knowledge/detail/5 release-notes, patch
- https://cn-sec.com/archives/1453025.html technical-description, exploit
- https://bbs.chaitin.cn/topic/37 technical-description, exploit
- https://www.vulncheck.com/advisories/weaver-e-office-10-0-20221201-unauthenticated-arbitrary-file-read-via-xmlrpcservlet third-party-advisory