CVE-2025-34040: Seeyon Beijing Zhiyuan Internet Software Co., Ltd Zhiyuan Oa Web Application System

Critical severity, CVSS 10.0. EPSS: 15.4% chance of exploitation in the next 30 days.

An arbitrary file upload vulnerability exists in the Zhiyuan OA platform via the wpsAssistServlet interface. The realFileType and fileId parameters are improperly validated during multipart file uploads, allowing unauthenticated attackers to upload crafted JSP files outside of intended directories using path traversal. Successful exploitation enables remote code execution as the uploaded file can be accessed and executed through the web server. Exploitation evidence was observed by the Shadowserver Foundation on 2025-02-01 UTC.

Affected products

• Seeyon Beijing Zhiyuan Internet Software Co., Ltd Zhiyuan Oa Web Application System: version 5.0 only; from 5.1, up to and including 5.6sp1; from 6.0, up to and including 6.1sp2; version 7.0 only; from 7.0sp1, up to and including 7.1; version 7.1sp1 only; …

Published 2025-06-24. Last modified 2026-06-17.