CRITICAL 9.3 NVD
CVE-2023-54398
Yonyou U8 Cloud contains an unauthenticated Java deserialization vulnerability in the nc.impl.pub.filesystem.FileManageServlet component that allows remote unau
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.
References
- https://avd.aliyun.com/detail?id=AVD-2023-1686894
- https://blog.csdn.net/qq_41904294/article/details/134277353
- https://cn-sec.com/archives/2182384.html
- https://security.yonyou.com/#/noticeInfo?id=400
- https://www.vulncheck.com/advisories/yonyou-u8-cloud-java-deserialization-rce-via-filemana
This critical severity vulnerability with a CVSS score of 9.3 was published on 2026-09-15 via NVD.
Risk Timeline
CVE Disclosed2026-09-15 · -1 days ago
Remediation Resources
Official Advisory
security.yonyou.com/#/noticeInfo?id=400Analysis & PoC
avd.aliyun.com/detail?id=AVD-2023-1686894Analysis & PoC
blog.csdn.net/qq_41904294/article/details/134277353
vulnfeed aggregates 14340 vulnerabilities from NVD, CISA KEV,
Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.