SQL Injection in Kunshi Network Technology Co., Ltd. Linknat Vos2009
CVE-2016-20096
Linknat VOS3000 and VOS2009 through version 2.1.2.0 contain an unauthenticated SQL injection vulnerability that allows remote attackers to execute arbitrary SQL commands by manipulating the name parameter in a POST request to the login endpoint. Attackers can inject malicious SQL through the login form and retrieve injected query results from a subsequent session request, enabling extraction of plaintext credentials and other database content with DBA-level privileges.
Vulnerability class: SQL Injection
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: 0.007 (51.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 51.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Kunshi Network Technology Co., Ltd. Linknat Vos2009 — versions 2.1.1.5, 2.1.1.8, 2.1.2.0
- Kunshi Network Technology Co., Ltd. Linknat Vos3000 — versions 2.1.1.5, 2.1.1.8, 2.1.2.0
Weakness classification (CWE)
References
- Packet Storm Entry (137159) (exploit)
- Archived WooYun Disclosure (technical-description, exploit)
- Vendor Homepage (product)
- www.vulncheck.com/advisories/linknat-vos3000-vos2009-sql-injection-via-login-jsp (third-party-advisory)
Frequently asked questions
- What is CVE-2016-20096?
- CVE-2016-20096 is a critical-severity vulnerability in Kunshi Network Technology Co., Ltd. Linknat Vos2009, classified under SQL Injection. CVSS score: 9.8/10. Published 2026-07-21.
- How severe is CVE-2016-20096?
- Critical severity. CVSS v3 base score is 9.8 out of 10.