CVE-2025-34040
CVE-2025-34040 is a critical-severity vulnerability with a CVSS 4.0 base score of 10.0. Its EPSS exploit-prediction score of 15% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-22.
Key facts
- Severity: Critical (CVSS 4.0 base score 10.0)
- EPSS exploit prediction: 15% (97th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-19043
- Weakness: CWE-22
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is CVE-2025-34040?
- 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.
- How severe is CVE-2025-34040?
- CVE-2025-34040 has a CVSS 4.0 base score of 10.0, rated critical severity.
- Is CVE-2025-34040 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 15% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2025-34040?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- Does CVE-2025-34040 have an EU (EUVD) identifier?
- Yes. CVE-2025-34040 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-19043.
- When was CVE-2025-34040 published?
- CVE-2025-34040 was published on 2025-06-24 and last updated on 2026-06-17.
References
- https://service.seeyon.com/patchtools/tp.html#/patchList?type=%E5%AE%89%E5%85%A8%E8%A1%A5%E4%B8%81&id=1
- https://vulncheck.com/advisories/zhiyuan-oa-system-path-traversal-file-upload
- https://www.cnblogs.com/pursue-security/p/17677130.html
- https://www.cnvd.org.cn/flaw/show/CNVD-2021-01627
- https://www.exploit-db.com/exploits/52490
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