Android ZCC denial of service

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-59570
StatePUBLISHED
AssignerZscaler
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-14 15:17:06 UTC
Updated2026-09-18 19:08:02 UTC
DescriptionOn affected versions of Zscaler client connector, a pre-installed peer app can tear down the Zscaler tunnel, force user logout, and toggle packet capture.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:H

EPSS: 0.000940000 probability, percentile 0.006900000 (date 2026-09-21)

Problem Types: CWE-20 | CWE-20 CWE-20 Improper input validation

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.5HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:H
3.1CNACVSS7.5HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Zscaler Client Connector affected Android: 4.2.0.152 custom Android, ChromeOS
CNA Zscaler Client Connector affected ChromeOS: 4.2.0.152 custom Android, ChromeOS

References

ReferenceSourceLinkTags
help.zscaler.com/zscaler-client-connector/client-connector-app-release-summary... [email protected] help.zscaler.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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