Arbitrary file upload in Weaver Network Co., Ltd. E-Cology 9.0
CVE-2022-4995
Weaver (Fanwei) E-cology 9.0 versions prior to 10.52 contain a file upload vulnerability that allows a remote, unauthenticated attacker to upload arbitrary files, including JSP webshells, by submitting a multipart/form-data POST request to /workrelate/plan/util/uploaderOperate.jsp with arbitrary secId and plandetailid field values. Successful exploitation results in remote code execution under the privileges of the application server process. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-14 (UTC).
Vulnerability class: Unrestricted File Upload
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.012 (67.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 68th percentile — 67.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000
Affected products
- Weaver Network Co., Ltd. E-Cology 9.0 — versions 0
Weakness classification (CWE)
References
- www.weaver.com.cn/cs/securityDownload.html (patch)
- www.weaver.com.cn/cs/ecology_full_log_en.html (release-notes)
- cn-sec.com/archives/1208148.html (third-party-advisory)
- ch0x01e.github.io/post/ecology9-wen-jian-shang-chuan-fen-xi/ (technical-description, exploit)
- github.com/gmh5225/CVE-2022-HW-POC/blob/main/泛微OA uploaderOperate.jsp 文件上传.md (technical-description, exploit)
- www.vulncheck.com/advisories/weaver-e-cology-file-upload-rce-via-uploaderoperat… (third-party-advisory)
Frequently asked questions
- What is CVE-2022-4995?
- CVE-2022-4995 is a critical-severity vulnerability in Weaver Network Co., Ltd. E-Cology 9.0, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2026-08-07.
- How severe is CVE-2022-4995?
- Critical severity. CVSS v3 base score is 9.8 out of 10.