CVE-2025-54983

Health check port on ZCC allows tunnel bypass

State: Published
Severity: 5.2 Medium
Published: Nov 12, 2025
Updated: Nov 12, 2025
Reserved: Aug 4, 2025

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.

Scores

CVSS	Score	Vector	Source
3.1	5.2 Medium	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N	Zscaler

Weaknesses

CWE-772 Missing Release of Resource after Effective Lifetime

Affected Products

Product	Versions
Zscaler Client ConnectorZscaler	4.6 to before 4.6.0.216Affected 4.7 to before 4.7.0.47Affected

References

https://help.zscaler.com/zscaler-client-connector/client-connector-app-release-summary-2025

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.