# CVE-2026-59564

## Summary

- **CVE ID:** CVE-2026-59564
- **Severity:** CRITICAL
- **CVSS Score:** 9.1 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N)
- **CWE:** CWE-304
- **Published:** Aug 24, 2026
- **Last Modified:** Aug 25, 2026

## Description

An authentication bypass issue exists in communications between affected versions of the Zscaler Client Connector and the Zscaler Client Connector Portal.

## Affected Products

- Zscaler — Client Connector (0)

## References

- [CNA](https://help.zscaler.com/zscaler-client-connector/client-connector-app-release-summary-2026)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.30%
- **EPSS Percentile:** 22.4

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