CVE-2025-34040 CRITICAL

CVE-2025-34040: Seeyon Zhiyuan OA System Path Traversal File Upload

Vendor Seeyon (Beijing Zhiyuan Internet Software Co., Ltd.)
Product Zhiyuan OA Web Application System
Weakness CWE-434 · Unrestricted file upload
Published June 24, 2025
Last update May 14, 2026

CVSS base score

10.0/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS 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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

June 24, 2025 CVE published
May 14, 2026 Record updated