CVE-2026-59569

Received Received - Intake

Improper Input Validation in Zscaler Client Connector

Publication date: 2026-09-14

Last updated on: 2026-09-15

Assigner: Zscaler, Inc.

Description

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

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-09-14

Last Modified

2026-09-15

Generated

2026-09-15

AI Q&A

2026-09-14

EPSS Evaluated

N/A

NVD

CVE-2026-59569

EUVD

EUVD-2026-77537

Affected Vendors & Products

Vendor	Product	Version / Range
zscaler	client_connector	*
zscaler	zscaler_client_connector	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-20	The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Attack-Flow Graph

Executive Summary

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

Impact Analysis

This vulnerability could allow an attacker to bypass security controls enforced by Zscaler Client Connector, potentially leading to unauthorized access or data exfiltration on affected devices.

Compliance Impact

The vulnerability allows bypassing Zscaler controls, which could lead to unauthorized data access or exfiltration. This may violate compliance requirements under GDPR (data protection) and HIPAA (health data security) by compromising network security controls.

Mitigation Strategies

Update Zscaler Client Connector to the latest version to address the improper input validation issue. Monitor official Zscaler advisories for patches and apply them promptly.

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