Yonyou U8 Cloud Java Deserialization RCE via FileManageServlet

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2023-54398
StatePUBLISHED
AssignerVulnCheck
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-15 17:17:08 UTC
Updated2026-09-15 18:17:10 UTC
DescriptionYonyou 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.

Risk And Classification

Primary CVSS: v4.0 9.3 CRITICAL from [email protected]

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Problem Types: CWE-502 | CWE-502 Deserialization of Untrusted Data

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary9.3CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/C...
4.0CNACVSS9.3CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
3.1[email protected]Secondary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.1CNACVSS9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Confidentiality
High
Integrity
High
Availability
High
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Yonyou U8 Cloud affected 1.0 custom Not specified
CNA Yonyou U8 Cloud affected 2.0 custom Not specified
CNA Yonyou U8 Cloud affected 2.1 custom Not specified
CNA Yonyou U8 Cloud affected 2.3 custom Not specified
CNA Yonyou U8 Cloud affected 2.5 custom Not specified
CNA Yonyou U8 Cloud affected 2.6 custom Not specified
CNA Yonyou U8 Cloud affected 2.65 custom Not specified
CNA Yonyou U8 Cloud affected 2.7 custom Not specified
CNA Yonyou U8 Cloud affected 3.0 custom Not specified
CNA Yonyou U8 Cloud affected 3.1 custom Not specified
CNA Yonyou U8 Cloud affected 3.2 custom Not specified
CNA Yonyou U8 Cloud affected 3.5 custom Not specified
CNA Yonyou U8 Cloud affected 3.6 custom Not specified
CNA Yonyou U8 Cloud affected 3.6sp custom Not specified

References

ReferenceSourceLinkTags
security.yonyou.com [email protected] security.yonyou.com
avd.aliyun.com/detail [email protected] avd.aliyun.com
www.yonyou.com/Global [email protected] www.yonyou.com
cn-sec.com/archives/2182384.html [email protected] cn-sec.com
www.vulncheck.com/advisories/yonyou-u8-cloud-java-deserialization-rce-via-filem... [email protected] www.vulncheck.com
blog.csdn.net/qq_41904294/article/details/134277353 [email protected] blog.csdn.net
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: The Shadowserver Foundation (en)

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