---
id: CVE-2026-59569
title: >-
  An improper input validation vulnerability in Zscaler Client Connector on
  Android and ChromeOS allows an attacker to potentially bypass Zscaler
  controls.
summary: >-
  An improper input validation vulnerability in Zscaler Client Connector on
  Android and ChromeOS allows an attacker to potentially bypass Zscaler
  controls.
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:L'
cwe:
  - CWE-20
vendor: Zscaler
product: Client Connector
affected:
  - 'client_connector < Android: 4.2.0.152'
  - 'client_connector < ChromeOS: 4.2.0.152'
published: '2026-09-14'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T19:08:02.707'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-59569'
references:
  - url: >-
      https://help.zscaler.com/zscaler-client-connector/client-connector-app-release-summary-2026
    label: cve@zscaler.com
tags:
  - nvd
  - cve.org
epss: 0.00122
epssPercentile: 0.0231
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-14T15:33:38.948595Z'
ingestedAt: '2026-09-14T15:23:07.424Z'
---

## Overview

An improper input validation vulnerability in Zscaler Client Connector on Android and ChromeOS allows an attacker to potentially bypass Zscaler controls.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.