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TI-2023-30648 Aliases CVE-2023-54398GHSA-r89p-qrrf-vpmc

Yonyou U8 Cloud Java Deserialization RCE via FileManageServlet

Priority HIGH 81CWE-502Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-502.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.012 68th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
YonyouU8 Cloud1.0; 2.0; 2.1; 2.3; 2.5; 2.6; 2.65; 2.7; 3.0; 3.1; 3.2; 3.5; 3.6; 3.6sp—No fix listedCNA
  • U8 Cloud VendorYonyou Affected 1.0; 2.0; 2.1; 2.3; 2.5; 2.6; 2.65; 2.7; 3.0; 3.1; 3.2; 3.5; 3.6; 3.6sp Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-54398
  2. 2026-10-03 Alias added: GHSA-r89p-qrrf-vpmc
  3. 2026-10-21 EPSS moved to the 50th–90th percentile

References

Exploit 2

Patch 1

Advisory 1

Other 1

  • TI-2025-24208 Yonyou NC BeanShell Command Injection CVSS 4.0CRITICAL 10.0
  • TI-2024-38464 Yonyou U8 CRM SQL Injection via fillbacksettingedit.php CVSS 4.0CRITICAL 9.3
  • TI-2015-08097 Seeyon A6 OA Unauthenticated SQL Injection via downloadAtt.jsp CVSS 4.0HIGH 8.7
  • TI-2026-63446 Yonyou KSOA search_list.jsp sql injection CVSS 4.0MEDIUM 6.9
  • TI-2026-00906 Yonyou KSOA HTTP GET Parameter user_popedom.jsp sql injection CVSS 4.0MEDIUM 6.9
  • TI-2026-00905 Yonyou KSOA HTTP GET Parameter select.jsp sql injection CVSS 4.0MEDIUM 6.9
See all 44 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences