CVE-2025-34039Known exploitationPublic exploitNetwork attack vector

Unauthenticated Java code execution via BeanShell servlet

Published Jun 24, 2025 · Updated May 14, 2026

Code injection in Yonyou UFIDA NC 6.5 and earlier allows remote attackers to execute arbitrary Java code through an exposed servlet. The bundled bsh.servlet.BshServlet passes the unauthenticated bsh.script parameter to the BeanShell interpreter, which evaluates it as Java code. Network access to the servlet is sufficient to run system commands and take control of the application server.

CVSS severity10.0
Critical
EPSS probability0.54%
Next 30 days · Sep 16, 2026
Known exploitationReported
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Code injection in Yonyou UFIDA NC 6.5 and earlier allows remote attackers to execute arbitrary Java code through an exposed servlet. The bundled bsh.servlet.BshServlet passes the unauthenticated bsh.script parameter to the BeanShell interpreter, which evaluates it as Java code. Network access to the servlet is sufficient to run system commands and take control of the application server.

The record

CVE
CVE-2025-34039
Published
Jun 24, 2025
Updated
May 14, 2026
Vendor
Yonyou Network Technology Co., Ltd.
Product
UFIDA NC
Classifications
CWE-306, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 5, 2025Exploitation reportedShadowserver honeypot exploitation activity
  2. Jun 23, 2025Exploitation reportedVulnCheck KEV listing
  3. Jun 24, 2025CVE publishedPublication date reported by the CVE source.
  4. May 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=6.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Yonyou Network Technology Co., Ltd. · UFIDA NCversion=0 <=6.5

Published CVSS scores

10.0VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationReported
Public exploitPublished

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Reported exploitation

Technologies

Your stack

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Your stack

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