Linknat VOS3000/VOS2009 2.1.2.0 SQL Injection via login.jsp
Published Jul 21, 2026
9.3
CRITICALCVSS 4.0
EPSS 0.67%
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.
Affected products
-
- Version 2.1.1.5StatusaffectedConstraints-
- Version 2.1.1.8StatusaffectedConstraints-
- Version 2.1.2.0StatusaffectedConstraints-
- Version
-
- Version 2.1.1.5StatusaffectedConstraints-
- Version 2.1.1.8StatusaffectedConstraints-
- Version 2.1.2.0StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Kunshi Network Technology Co., Ltd. | Linknat VOS2009 | affected |
| ||||||||||||
| Kunshi Network Technology Co., Ltd. | Linknat VOS3000 | affected |
|
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
1 other source (NVD) ▾
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
PoCAutomatable
YesTechnical Impact
TotalDecision
n/aAssessed Jul 22, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
Jul–Oct 2026- EPSS v5
Percentile over time
- EPSS v5
Table of values (2 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.67% (0.00673) | 50.29th | v5 (v2026.06.15) |
| Jul 22, 2026 | 0.38% (0.00382) | 30.73th | v5 (v2026.06.15) |
References (4)
- https://packetstorm.news/files/id/137159 exploit
- https://web.archive.org/web/20160601102456/http://www.wooyun.org/bugs/wooyun-2010-0145458 technical-descriptionexploit
- https://www.linknat.com/ product
- https://www.vulncheck.com/advisories/linknat-vos3000-vos2009-sql-injection-via-login-jsp third-party-advisory
| Link | Providers | Tags |
|---|---|---|
| https://packetstorm.news/files/id/137159 | exploit | |
| https://web.archive.org/web/20160601102456/http://www.wooyun.org/bugs/wooyun-2010-0145458 | technical-descriptionexploit | |
| https://www.linknat.com/ | product | |
| https://www.vulncheck.com/advisories/linknat-vos3000-vos2009-sql-injection-via-login-jsp | third-party-advisory |
Change history (0)
No recorded changes yet.