CVE-2026-59569 Zscaler Client Connector - Authentication Bypass

Zscaler Client Connector on Android and ChromeOS contains an improper input validation vulnerability, letting attackers potentially bypass Zscaler controls, exploit requires crafted input.

CVSS base score 8.1 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.18% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Broken Access Control
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:L
Published
14 September 2026
Updated
15 October 2026
Weakness
CWE-20

Vendor fix

Update to the latest version of Zscaler Client Connector.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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