# CVE-2026-59568 — Zscaler Client Connector

> As of 2026-08-25, CVE-2026-59568 is a CRITICAL-severity vulnerability in Zscaler Client Connector, CVSS v3.1 9.1. Threadlinqs Intelligence links 1 tracked threat campaign to CVE-2026-59568, most recently “Multiple Zscaler Client Connector Flaws Enable Remote Code Execution (CVE-2026-59568)”.

**Last updated:** 2026-08-25

## What is CVE-2026-59568?

Multiple vulnerabilities on affected versions of Zscaler Client Connector allow remote code execution, giving an unauthenticated, unprivileged user the ability to execute arbitrary code in the ZCC context.

The record classifies CVE-2026-59568 under weakness class [CWE-20](https://cwe.mitre.org/data/definitions/20.html). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction, and has high impact on confidentiality, integrity. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 19 days ago.

## Severity and exploitation probability

- **CVSS v3.1 base score:** 9.1 — CRITICAL (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N`)
- **CISA KEV:** Not listed in the CISA Known Exploited Vulnerabilities catalog
- **Threadlinqs priority:** 4.6/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- **Published:** 2026-08-24, last modified 2026-08-25

## Is CVE-2026-59568 being exploited?

No public exploitation evidence for CVE-2026-59568 is recorded in the sources Threadlinqs tracks — CISA KEV, Exploit-DB, public proof-of-concept repositories and ProjectDiscovery Nuclei — as of 2026-08-25. That is an absence of evidence in those feeds, not a guarantee that the vulnerability is unexploited.

## Affected products and versions

- **Zscaler**: Client Connector

## How to fix CVE-2026-59568

No vendor patch reference has been recorded for CVE-2026-59568 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.

## Threat activity tracking CVE-2026-59568

1 tracked threat in the Threadlinqs corpus references CVE-2026-59568, either in the campaign’s CVE list or as an indicator on the campaign record.

- [Multiple Zscaler Client Connector Flaws Enable Remote Code Execution (CVE-2026-59568)](https://intel.threadlinqs.com/threat/TL-2026-2139) — CRITICAL · 2026-08-25

## Sources

Enriched from CVE.org, NVD, GitHub Security Advisories. Last verified by Threadlinqs on 2026-08-25. This product uses the NVD API but is not endorsed or certified by the NVD.

**Other references**

- [help.zscaler.com](https://help.zscaler.com/zscaler-client-connector/client-connector-app-release-summary-2026)

Canonical: https://intel.threadlinqs.com/cve/CVE-2026-59568
Full detection coverage and IOCs for threats exploiting CVE-2026-59568 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp