Local denial-of-service
Summary
| CVE | CVE-2026-59566 |
|---|---|
| State | PUBLISHED |
| Assigner | Zscaler |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-08-24 14:16:55 UTC |
| Updated | 2026-08-28 18:39:48 UTC |
| Description | A locally exploitable buffer overflow bug can cause a local denial-of-service attack on affected versions of Zscaler Client Connector on Android and ChromeOS. |
Risk And Classification
Primary CVSS: v3.1 8.4 HIGH from [email protected]
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.001220000 probability, percentile 0.022150000 (date 2026-08-30)
Problem Types: CWE-229 | CWE-229 CWE-229 Improper handling of values
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 8.4 | HIGH | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| 3.1 | CNA | CVSS | 8.4 | HIGH | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
CVSS v3.1 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
HighIntegrity
HighAvailability
HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Zscaler | Client Connector | affected Android: 4.2 custom | Android, ChromeOS |
| CNA | Zscaler | Client Connector | affected ChromeOS: 4.2 custom | Android, ChromeOS |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| 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 |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.