CVE-2026-59569

Status: Awaiting AnalysisHigh (8.1)—

An improper input validation vulnerability in Zscaler Client Connector on Android and ChromeOS allows an attacker to potentially bypass Zscaler controls.

CVSS

Version: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:L
Base score: 8.1

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.18%
Percentile among all scored CVEs: 6
Score date: 10/6/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

ExploitationT1068 Exploitation for Privilege Escalationprivilege escalation85 %
Primary impactT1556 Modify Authentication Processdefense impairment · persistence · credential access75 %
Secondary impactT1090 Proxycommand and control70 %

AV:L + PR:H sin interacción → escalada de privilegios (T1068). La vulnerabilidad de validación en controles de seguridad Zscaler permite bypass (impersonación/manipulación de políticas T1556) y potencial SSRF/proxy (T1090) al eludir restricciones de red.

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

User Account Management Threat Intelligence Program SSL/TLS Inspection Restrict File and Directory Permissions Restrict Registry Permissions Privileged Process Integrity

Affected technologies (3)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Google — Android^AI Google — Chromeos^AI Zscaler — Client Connector^AI

CWEs

CWE-20

References

https://help.zscaler.com/zscaler-client-connector/client-connector-app-release-summary-2026

Raw JSON (NVD)

Show

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