CVE-2026-59564

critical

Description

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

References

https://help.zscaler.com/zscaler-client-connector/client-connector-app-release-summary-2026

Details

Source: Mitre, NVD

Published: 2026-08-24

Updated: 2026-08-25

Risk Information

CVSS v2

Base Score: 9.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:N

Severity: High

CVSS v3

Base Score: 9.1

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Severity: Critical

EPSS

EPSS: 0.00299

Detections

Analytics