Description
A health check port on Zscaler Client Connector on Windows, versions 4.6 < 4.6.0.216 and 4.7 < 4.7.0.47, which under specific circumstances was not released after use, allowed traffic to potentially bypass ZCC forwarding controls.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Zscaler | Zscaler Client Connector | 4.6 – < 4.6.0.216, 4.7 – < 4.7.0.47 | 4.6.0.216 |
Advisories 1
- WID-SEC-2025-2578 ZScaler Client Connector: Schwachstelle ermöglicht Umgehen von Sicherheitsvorkehrungen BSI CERT-Bund (WID) · Nov 11, 2025