High severity · published Sep 14, 2026
CVE-2026-59569
Android ZCC VPN API method privilege escalation
8.1
CVSS
0.2%
EPSS
No
On KEV
Description
An improper input validation vulnerability in Zscaler Client Connector on Android and ChromeOS allows an attacker to potentially bypass Zscaler controls.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:L
Attack vector
Local
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
Low
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 7% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CC
Client Connector · Zscaler
before Android: 4.2.0.152; before ChromeOS: 4.2.0.152 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-59569
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-59569
help.zscaler.com
https://help.zscaler.com/zscaler-client-connector/client-connector-app-release-summary-2026
More from Client Connector
9.8
CVE-2024-23483
An Improper Input Validation vulnerability in Zscaler Client Connector on MacOS allows OS Command Injection. This issue affects Zscaler Client Connector on MacOS <4.2
9.8
CVE-2024-23459
An Improper Link Resolution Before File Access ('Link Following') vulnerability in Zscaler Client Connector on Mac allows a system file to be overwritten.This issue affects…
9.8
CVE-2023-28798
An out-of-bounds write to heap in the pacparser library on Zscaler Client Connector on Mac may lead to arbitrary code execution
9.8
CVE-2024-23480
A fallback mechanism in code sign checking on macOS may allow arbitrary code execution
9.8
CVE-2023-28805
An Improper Input Validation vulnerability in Zscaler Client Connector on Linux allows Privilege Escalation