RCE in Seeyon Oa Web Application System

CVE-2025-3999

A vulnerability, which was classified as problematic, has been found in Seeyon Zhiyuan OA Web Application System 8.1 SP2. This issue affects some unknown processing of the file seeyon\opt\Seeyon\A8\ApacheJetspeed\webapps\seeyon\common\js\addDate\date.jsp of the component URL Parameter Handler. The manipulation leads to cross site scripting. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.

Vulnerability class: XSS (Cross-Site Scripting)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.003 (21.1th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 21.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2025-3999: held from 0.003 to 0.003.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000

Affected products

Weakness classification (CWE)

References

  • vuldb.com/ (VDB Entry, Third Party Advisory, vdb-entry)
  • vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry)
  • vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
  • wx.mail.qq.com/s (exploit, Broken Link)

Frequently asked questions

What is CVE-2025-3999?
CVE-2025-3999 is a low-severity vulnerability in Seeyon Oa Web Application System, classified under Cross-site Scripting. CVSS score: 3.5/10. Published 2025-04-28.
How severe is CVE-2025-3999?
Low severity. CVSS v3 base score is 3.5 out of 10.