Buffer Overflow Vulnerability in Zscaler Client Connector on Windows
CVE-2026-59565

8.8HIGH

Key Information:

Vendor

Zscaler

Status
Client Connector
Vendor
CVE Published:
24 August 2026

What is CVE-2026-59565?

A buffer overflow vulnerability exists in Zscaler Client Connector for Windows, enabling remote attackers to trigger a local denial-of-service condition. This flaw may lead to instability in the application, affecting the operating system's kernel, thereby impacting user experience and network security.

Affected Version(s)

Client Connector Windows 0

References

https://help.zscaler.com/zscaler-client-connector/client-...

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.