Junglewise Threat Intelligence

CVE-2026-59569: Zscaler Client Connector improper input validation on Android and ChromeOS

CVE-2026-59569 · Severity: high · CVSS 8.1 · Published 2026-09-14

Technologies: Zscaler Client Connector. Vendors: Zscaler.

Executive brief

Zscaler Client Connector is a security application that protects mobile and chromebook devices by enforcing security policies and controls. An improper input validation flaw allows attackers to bypass these security controls, potentially exposing devices to unauthorized network access or policy circumvention.

Technical details

The vulnerability is an improper input validation issue in Zscaler Client Connector affecting Android and ChromeOS platforms. The flaw permits an attacker to craft malicious input that bypasses Zscaler's security controls. The attack vector appears to be network-based, though specific preconditions and the exact mechanism for exploitation are not detailed in the available advisory content. Successful exploitation would allow circumvention of intended security policies enforced by the connector.

Affected products

  • Zscaler Client Connector <UNKNOWN>

Timeline

  • 2026-09-14: disclosed

References

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