# CVE-2026-16520

## Summary

- **CVE ID:** CVE-2026-16520
- **Severity:** HIGH
- **CVSS Score:** 8.7 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N)
- **CWE:** CWE-20, CWE-202
- **Published:** Aug 20, 2026
- **Last Modified:** Aug 21, 2026

## Description

Improper input validation and Exposure of sensitive information through data queries vulnerability in Genians Genian NAC V4.0, Genians Genian NAC V5.0, and Genians Genian ZTNA V6.0 allows SQL Injection and Authentication Bypass.

This issue affects Genian NAC V4.0: from 4.0.0 before 4.0.175(Revision 150340); 
Genian NAC V5.0: from 5.0.0 before 5.0.65 LTS(Revision 150331), from 5.0.0 before 5.0.75 LTS(Revision 150330), from 5.0.0 before 5.0.87 Release Stable(Revision 150329), and from 5.0.0 before 5.0.88(Revision 150328); 
Genian ZTNA V6.0: from 6.0.0 before 6.0.26 LTS(Revision 150337), from 6.0.0 before 6.0.35 LTS(Revision 150336), from 6.0.0 before 6.0.47 Release Stable(Revision 150334), and from 6.0.0 before 6.0.48(Revision 150333).

## Affected Products

- Genians — Genian NAC V4.0 (4.0.0)
- Genians — Genian NAC V5.0 (5.0.0)
- Genians — Genian ZTNA V6.0 (6.0.0)

## References

- [CNA](https://docs.genians.com/release/ko/advisories/GN-SA-2026-003.html)
- [CNA](https://github.com/genians/security-research/security/advisories/GHSA-f6f5-wx2h-ccfw)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.39%
- **EPSS Percentile:** 32.0

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._