CVE-2026-59570 Zscaler Client Connector - Denial of Service

Zscaler Client Connector contains a denial of service caused by a pre-installed peer app tearing down the Zscaler tunnel, letting attackers force user logout and toggle packet capture, exploit requires pre-installed peer app.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.13% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:H
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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