CVE-2026-59566
HighCVSS 8.4Exploitation Probability (EPSS)
Low risk2th percentile - higher than 2% of all known CVEs
Summary
A locally exploitable buffer overflow bug can cause a local denial-of-service attack on Zscaler Client Connector on Android and ChromeOS.
Risk Assessment
An attacker can cause the application or system to crash, potentially disrupting services and affecting availability.
Recommendation
Update Zscaler Client Connector on Android and ChromeOS devices to the latest patched version.
Other vulnerabilities in Zscaler Client Connector
See all- CVE-2026-59568Critical
Multiple vulnerabilities on affected versions of Zscaler Client Connector allow remote code execution, giving an unauthenticated, unprivileged user the ability to execute arbitrary code in the ZCC context.
- CVE-2026-59564Critical
An authentication bypass issue exists in communications between affected versions of the Zscaler Client Connector and the Zscaler Client Connector Portal.
- CVE-2026-59567High
Multiple vulnerabilities in Zscaler Client Connector allow local privilege escalation, giving an unprivileged user the ability to execute arbitrary code in a privileged context.
- CVE-2026-59565High
A remotely exploitable buffer overflow bug can cause a local and kernel denial-of-service attack on Zscaler Client Connector on Windows.
- CVE-2026-22569Medium
An incorrect startup configuration of Zscaler Client Connector on Windows may cause a limited amount of traffic to bypass inspection under rare circumstances.
Original NVD description (English source)
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.