CVE-2023-54398 — Yonyou U8 Cloud Java Deserialization RCE via FileManageServlet
Yonyou U8 Cloud contains an unauthenticated Java deserialization vulnerability in the nc.impl.pub.filesystem.FileManageServlet component that allows remote unauthenticated attac…
Published: 2026-09-15 · CVSS: 9.3 · CVSS 4.0
Yonyou U8 Cloud contains an unauthenticated Java deserialization vulnerability in the nc.impl.pub.filesystem.FileManageServlet component that allows remote unauthenticated attackers to execute arbitrary OS commands by sending a serialized payload via POST request. Attackers can exploit the doAction method, which passes raw HTTP request body data directly to ObjectInputStream.readObject() without filtering, to achieve remote code execution. Exploitation evidence was first observed by the Shadowserver Foundation on 2025-02-13.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7