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Vulnerability record · CVE-2026-59570 · published 14 September 2026

CVE-2026-59570: Improper input validation vulnerability

On affected versions of Zscaler client connector, a pre-installed peer app can tear down the Zscaler tunnel, force user logout, and toggle packet capture.

7.5 CVSS 3.1 High EPSS 0.13% · top 97.7% CWE-20 · Improper input validation Awaiting Analysis
7.5CVSS 3.1 base score
0.13%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
18 Sep 2026Last modified by NVD

Description

On affected versions of Zscaler client connector, a pre-installed peer app can tear down the Zscaler tunnel, force user logout, and toggle packet capture.

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

References

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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-59570), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.