CVE-2026-59565
An attacker can exploit multiple vulnerabilities in ZScaler Client Connector to bypass security measures, execute arbitrary code, gain elevated privileges, or trigger a denial of service condition.
CSIRTS triage
- What
- Multiple vulnerabilities in ZScaler Client Connector allow attackers to bypass security measures, execute arbitrary code, gain elevated privileges, and trigger denial of service.
- Who is affected
- All deployments of ZScaler Client Connector are at risk; remote code execution and privilege escalation are possible.
- Urgency
- Critical; remote code execution and privilege escalation combined with security bypass require immediate patching.
- Action
- Update ZScaler Client Connector to the latest patched version on all endpoints immediately.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.27% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 19% of all EPSS-scored CVEs.
Advisory coverage (2)
- high[NEW] [high] ZScaler Client Connector: Multiple Vulnerabilitiescert-bund · 2026-08-25
- highCVE-2026-59565: A remotely exploitable buffer overflow bug can cause a local and kernel denial-of-service atta…nvd · 2026-08-24
External references
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[](https://www.csirts.com/cve/CVE-2026-59565)