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.
Published: 2025-11-12
Score: 5.2 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

No remediation available yet.

Tracking

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Advisories

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History

Wed, 12 Nov 2025 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 12 Nov 2025 12:45:00 +0000

Type Values Removed Values Added
First Time appeared Microsoft
Microsoft windows
Zscaler
Zscaler client Connector
Vendors & Products Microsoft
Microsoft windows
Zscaler
Zscaler client Connector

Wed, 12 Nov 2025 03:30:00 +0000

Type Values Removed Values Added
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.
Title Health check port on ZCC allows tunnel bypass
Weaknesses CWE-772
References
Metrics cvssV3_1

{'score': 5.2, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'}


Subscriptions

Microsoft Windows
Zscaler Client Connector
cve-icon MITRE

Status: PUBLISHED

Assigner: Zscaler

Published:

Updated: 2025-11-12T18:18:36.813Z

Reserved: 2025-08-04T14:51:53.367Z

Link: CVE-2025-54983

cve-icon Vulnrichment

Updated: 2025-11-12T18:18:31.937Z

cve-icon NVD

Status : Deferred

Published: 2025-11-12T04:15:41.987

Modified: 2026-04-15T00:35:42.020

Link: CVE-2025-54983

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-11-12T12:36:27Z

Weaknesses