What is CVE-2025-34040?

CVE-2025-34040 is an unauthenticated Seeyon Zhiyuan OA System Path Traversal File Upload affecting Seeyon (Beijing Zhiyuan Internet Software Co., Ltd.) Zhiyuan OA Web Application System. An arbitrary file upload vulnerability exists in the Zhiyuan OA platform via the wpsAssistServlet interface. The realFileType and fileId parameters are improperly validated during multipart file uploads, allowing...

Is CVE-2025-34040 actively exploited?

Yes. KEV Intelligence tracks CVE-2025-34040 as a known exploited vulnerability. Confidence is high.

What exploitation activity has KEV Intelligence observed?

KEV Intelligence has not yet recorded sensor-observed exploitation attempts for CVE-2025-34040. Our sensors continue to monitor for activity targeting this CVE.

Which versions are affected?

CVE-2025-34040 affects Seeyon (Beijing Zhiyuan Internet Software Co., Ltd.) Zhiyuan OA Web Application System. KEV Intelligence lists 7 version rows; examples include 5.0, 5.1 to <= 5.6sp1, and 6.0 to <= 6.1sp2.

No. CVE-2025-34040 is not currently listed in CISA KEV.

Vulnerability report

Exploited in the wild High confidence Not in CISA KEV

CVE-2025-34040

Q: How should organizations remediate it?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Q: Is it in CISA KEV?

No. CVE-2025-34040 is not currently listed in CISA KEV.

Seeyon Zhiyuan OA System Path Traversal File Upload

Seeyon (Beijing Zhiyuan Internet Software Co. / Zhiyuan OA Web Application System · 5.0

View live feed Monitor via API Watch CVE

Severity: CVSS 10.0 · Critical
Confidence: High
Exploit status: Exploited in the wild
EPSS: 14.4%
First observed: —
Last observed: —

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2025-34040 is an unauthenticated Seeyon Zhiyuan OA System Path Traversal File Upload affecting Seeyon (Beijing Zhiyuan Internet Software Co., Ltd.) Zhiyuan OA Web Application System. An arbitrary file upload...

Is it exploited?

Yes. KEV Intelligence tracks this CVE as a known exploited vulnerability. Confidence is high.

Who is affected?

Seeyon (Beijing Zhiyuan Internet Software Co., Ltd.) / Zhiyuan OA Web Application System 5.0.

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

An arbitrary file upload vulnerability exists in the Zhiyuan OA platform via the wpsAssistServlet interface

An arbitrary file upload vulnerability exists in the Zhiyuan OA platform via the wpsAssistServlet interface. The realFileType and fileId parameters are improperly validated during multipart file uploads, allowing unauthenticated attackers to upload crafted JSP files outside of intended directories using path traversal.

Successful exploitation enables remote code execution as the uploaded file can be accessed and executed through the web server. Exploitation evidence was observed by the Shadowserver Foundation on 2025-02-01 UTC.

Vendor Product Affected Status

Seeyon (Beijing Zhiyuan Internet Software Co., Ltd.) Zhiyuan OA Web Application System 5.0 Affected

Seeyon (Beijing Zhiyuan Internet Software Co., Ltd.) Zhiyuan OA Web Application System Through 5.6sp1 Affected

Seeyon (Beijing Zhiyuan Internet Software Co., Ltd.) Zhiyuan OA Web Application System Through 6.1sp2 Affected

Seeyon (Beijing Zhiyuan Internet Software Co., Ltd.) Zhiyuan OA Web Application System 7.0 Affected

Seeyon (Beijing Zhiyuan Internet Software Co., Ltd.) Zhiyuan OA Web Application System Through 7.1 Affected

Seeyon (Beijing Zhiyuan Internet Software Co., Ltd.) Zhiyuan OA Web Application System 7.1sp1 Affected

Seeyon (Beijing Zhiyuan Internet Software Co., Ltd.) Zhiyuan OA Web Application System Through 8.0sp2 Affected

View vendor advisory

Published: 24 Jun 2025
Exploitation Reported: 24 Jun 2025
Attack vector: Remote
Complexity: Low
Privileges: None
User interaction: None

CVE References

CVE Record CVE.org · CVE Record https://www.cve.org/CVERecord?id=CVE-2025-34040
Vendor Advisory — service.seeyon.com service.seeyon.com · Vendor Advisory https://service.seeyon.com/patchtools/tp.html#/patchList?type=%E5%AE%...
Third-Party Advisory — cnvd.org.cn cnvd.org.cn · Third-Party Advisory https://www.cnvd.org.cn/flaw/show/CNVD-2021-01627
Third-Party Advisory — vulncheck.com vulncheck.com · Third-Party Advisory https://vulncheck.com/advisories/zhiyuan-oa-system-path-traversal-fil...
Exploit — cnblogs.com cnblogs.com · Exploit https://www.cnblogs.com/pursue-security/p/17677130.html

Exploitation evidence

Why KEV Intelligence marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

The Shadowserver

Recorded 24 Jun 2025

Independent exploitation attestation added to the KEV Intelligence record.

Proof of concept available

Nuclei Templates

Recorded 12 Jun 2026

Public scanner or PoC coverage increases practical exploitability.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the KEV Intelligence Pro API.

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Source	Added
The Shadowserver First	2025-06-24 01:12 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets: 0
User-Agents: 0

Raw values available in Pro and Enterprise.

Scanner coverage

Nuclei template detected 01 Jun 2026.

View Nuclei template

Virtual patch status

No KEV Intelligence virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

Scanner Artifacts

Scanner and exploit-framework references linked to this CVE.

Scanner	Reference	Detected
Nuclei	https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-34040.yaml	01 Jun 2026

Risk and context

Severity, weaknesses, and research context

CVSS v4.0

10.0 Critical

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

EPSS

14.4%

Weaknesses

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') CWE-22 Unrestricted Upload of File with Dangerous Type CWE-434

Potential Proof of Concepts

These PoCs are unverified and could contain malware. Use at your own risk.

Zhiyuan OA Platform - Arbitrary File Upload

nuclei · Created Unknown

Timeline

From disclosure to observed exploitation

12 Jun 2026
Public PoC available

Public proof-of-concept code published
01 Jun 2026
Nuclei template available

Scanner coverage available
24 Jun 2025
CVE published

Vulnerability disclosed publicly
24 Jun 2025
Added to KEV Intelligence KEV Feed

High-confidence, third-party attested exploitation
15 Apr 2025
CVE ID reserved

Identifier reserved by the CNA

Pro API

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Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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Evidence confidence and provenance
First-party sensor telemetry
PoC and scanner references
Affected versions and enrichment
Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2025-34040

Free JSON includes basic KEV fields

{
  "cve_id": "CVE-2025-34040",
  "confidence": "High",
  "cvss_score": 10.0,
  "cvss_estimated": false,
  "epss_score": 0.1438,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}

Early warning alerts

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