---
id: CVE-2026-59566
title: >-
  A locally exploitable buffer overflow bug can cause a local denial-of-service
  attack on affected versions of Zscaler Client Connector on Android and
  ChromeOS.
summary: >-
  A locally exploitable buffer overflow bug can cause a local denial-of-service
  attack on affected versions of Zscaler Client Connector on Android and
  ChromeOS.
severity: high
cvss: 8.4
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-229
published: '2026-08-24'
updated: '2026-10-12'
sourceUpdated: '2026-10-12T15:10:00.207'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-59566'
references:
  - url: >-
      https://help.zscaler.com/zscaler-client-connector/client-connector-app-release-summary-2026
    label: cve@zscaler.com
tags:
  - nvd
epss: 0.00175
epssPercentile: 0.06476
ingestedAt: '2026-10-12T15:55:08.117Z'
---

## Overview

A locally exploitable buffer overflow bug can cause a local denial-of-service attack on affected versions of Zscaler Client Connector on Android and ChromeOS.

## Remediation

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