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CVE-2026-59568— Remote Code Execution

Quick assessment

Affected
Zscaler Client Connector
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Zscaler Client Connector是美国Zscaler公司的一款实现安全远程访问的网络连接软件。 Zscaler Client Connector存在输入验证错误漏洞，该漏洞源于输入验证错误，可能导致未经身份验证、无权限的用户在ZCC环境中执行任意代码。以下版本受到影响：Windows 4.6.0.457之前版本、Windows 4.7.0.317之前版本、Windows 4.8.0.232之前版本、Windows 4.9.0.372之前版本、MacOS 4.5.2.312之前版本、MacO

CVSS 9.1 · Critical EPSS 0.66% · P51

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 6

VendorProduct Version RangeStatus
Zscaler Client Connector < Windows: 4.6.0.457, 4.7.0.317, 4.8.0.232, 4.9.0.372 affected
< MacOS: 4.5.2.312, 4.7.0.292, 4.8.0.191 affected
< Linux: 3.7.2.64, 4.2.1.64 affected
< Android: 4.2 affected
< ChromeOS: 4.2 affected
< iOS: 4.5.1 affected
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I. Basic Information for CVE-2026-59568

Vulnerability Information
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Vulnerability Title
Remote Code Execution
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Zscaler Client Connector 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Zscaler Client Connector是美国Zscaler公司的一款实现安全远程访问的网络连接软件。 Zscaler Client Connector存在输入验证错误漏洞，该漏洞源于输入验证错误，可能导致未经身份验证、无权限的用户在ZCC环境中执行任意代码。以下版本受到影响：Windows 4.6.0.457之前版本、Windows 4.7.0.317之前版本、Windows 4.8.0.232之前版本、Windows 4.9.0.372之前版本、MacOS 4.5.2.312之前版本、MacO
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Zscaler Client Connector 0 ~ Windows: 4.6.0.457, 4.7.0.317, 4.8.0.232, 4.9.0.372 -

II. Public POCs for CVE-2026-59568

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III. Intelligence Information for CVE-2026-59568

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Same Patch Batch · Zscaler · 2026-08-24 · 5 CVEs total

CVE-2026-59564 9.1 CRITICAL Authentication bypass between ZCC and client connector portal
CVE-2026-59565 8.8 HIGH Local and kernel denial-of-service
CVE-2026-59567 8.8 HIGH Local privilege escalation
CVE-2026-59566 8.4 HIGH Local denial-of-service

IV. Related Vulnerabilities

Same product: Client Connector
Same vendor: Zscaler
Same weakness: CWE-20

V. Comments for CVE-2026-59568

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