CVE-2016-20096
Critical
Description
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.
SeverityCritical
CVSS9.8
Exploit probability—
ProductLinknat VOS3000
PublishedJul 21, 2026
First seenJul 21, 2026
Weakness typeCWE-89SQL injection
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Kunshi Network Technology Co., Ltd. Linknat VOS3000 | 2.1.1.5, 2.1.1.8, 2.1.2.0 | — |
| Kunshi Network Technology Co., Ltd. Linknat VOS2009 | 2.1.1.5, 2.1.1.8, 2.1.2.0 | — |
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