CVE-2026-59570— Android ZCC denial of service
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.
在受影响的 Zscaler 客户端连接器版本中，预装的 peer 应用可以终止 Zscaler 隧道、强制用户登出，并切换数据包捕获功能。
Possible ATT&CK Techniques 1 AI
T1059.001 · PowerShell
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I. Basic Information for CVE-2026-59570
Vulnerability Information
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Vulnerability Title
Android ZCC denial of service
Source: CVE Program / CVE List V5
Vulnerability Description
On affected versions of Zscaler client connector, a pre-installed peer app can tear down the Zscaler tunnel, force user logout, and toggle packet capture.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Zscaler | Client Connector | 0 ~ Android: 4.2.0.152 | - |
|
II. Public POCs for CVE-2026-59570
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Same Patch Batch · Zscaler · 2026-09-14 · 3 CVEs total
| CVE-2026-25687 | 8.1 HIGH | ZCC race condition in ZPA tunnel handler |
| CVE-2026-59569 | 8.1 HIGH | Android ZCC VPN API method privilege escalation |
IV. Related Vulnerabilities
Same weakness: CWE-20
-
CVE-2026-54182
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Pimcore: ClassDefinition UID regex missing end anchor allows -
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SQLAdmin: Unvalidated sortBy parameter in `ModelView` bypass -
CVE-2026-59569
Android ZCC VPN API method privilege escalation -
CVE-2026-57130
PraisonAI: IMAP Command Injection via Unsanitized Email Sear
V. Comments for CVE-2026-59570
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