SQL Injection in Weaver Network Co., Ltd. E-Cology 8.0
CVE-2016-20097
Weaver (Fanwei) E-cology 8.0 contains a SQL injection vulnerability in the SignatureDownLoad servlet that allows unauthenticated remote attackers to read arbitrary files by injecting a UNION SELECT payload into the markId GET parameter, which is concatenated unsanitized into a SQL query. Attackers can control the markPath value returned by the query to supply an attacker-controlled filesystem path, causing the servlet to read and stream back arbitrary files accessible to the application server process, including sensitive configuration files containing database credentials. Disclosure materials indicate that this vulnerability has been remediated, but it's unclear which version resolved the issue. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-18 (UTC).
Vulnerability class: SQL Injection
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.006 (48.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 48.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.006 · change: +0.002
Affected products
- Weaver Network Co., Ltd. E-Cology 8.0 — 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)
- wy.zone.ci/bug_detail.php (technical-description, exploit)
- qkl.seebug.org/vuldb/ssvid-98091 (third-party-advisory)
- www.vulncheck.com/advisories/weaver-e-cology-sql-injection-file-read-via-signat… (third-party-advisory)
Frequently asked questions
- What is CVE-2016-20097?
- CVE-2016-20097 is a high-severity vulnerability in Weaver Network Co., Ltd. E-Cology 8.0, classified under SQL Injection. CVSS score: 7.5/10. Published 2026-08-11.
- How severe is CVE-2016-20097?
- High severity. CVSS v3 base score is 7.5 out of 10.