Android ZCC VPN API method privilege escalation

published 2026-09-14 55 d ago modified 2026-09-18 51 d ago also EUVD-2026-77537

cvss: 8.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 7%
public exploits: 0; none known

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

Patch / fix

fixed in 1

Zscaler Client Connector Android: 4.2.0.152, ChromeOS: 4.2.0.152

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 56 d ago (2026-09-14)

Exploit prediction

0.18% chance of exploitation in the next 30 days, higher than 7% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	8.1	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:L

Affected products

Zscaler Client Connector

Classification

Weakness

CWE-20 Improper Input Validation

References

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

Sources

CVE List CVE-2026-59569
NVD CVE-2026-59569

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary