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CVE-2026-59565

Local and kernel denial-of-service

Published: Aug 24, 2026Updated: Aug 28, 2026 Sources: CVE List NVDCWE-229
8.8HIGH
NVD MITRE
EPSS Score
0.3%
Top 81.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
Not available

Description

A remotely exploitable buffer overflow bug can cause a local and kernel denial-of-service attack on affected versions of Zscaler Client Connector on Windows.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-229

Affected Products

Zscaler
commercial·USaka client connector, zscaler internet access admin portal, zia, zia admin ui
Client ConnectorSaaS
Security Products / secure-gateway-vpn

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
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References

https://help.zscaler.com/zscaler-client-connector/client-connector-app-release-summary-2026
help.zscaler.com
News mentions
1

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