Zscaler Client Connector prior 4.6.0.216/4.7.0.47 on Windows Health Check Port release of resource

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Zscaler Client Connector on Windows. Affected is an unknown function of the component Health Check Port. Performing a manipulation results in release of resource. This vulnerability is reported as CVE-2025-54983. The attack requires a local approach. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Zscaler Client Connector on Windows. This affects an unknown functionality of the component Health Check Port. The manipulation with an unknown input leads to a release of resource vulnerability. CWE is classifying the issue as CWE-772. The product does not release a resource after its effective lifetime has ended, i.e., after the resource is no longer needed. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at help.zscaler.com. This vulnerability is uniquely identified as CVE-2025-54983 since 08/04/2025. The exploitability is told to be easy. Attacking locally is a requirement. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 4.6.0.216 or 4.7.0.47 eliminates this vulnerability.

The vulnerability is also documented in the databases at CNNVD (CNNVD-202511-1522) and CERT Bund (WID-SEC-2025-2578). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • ZScaler Client Connector

Productinfo

Vendor

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 5.2
CNA Vector (Zscaler): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Release of resource
CWE: CWE-772 / CWE-400 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Client Connector 4.6.0.216/4.7.0.47

Timelineinfo

08/04/2025 CVE reserved
11/12/2025 +100 days Advisory disclosed
11/12/2025 +0 days VulDB entry created
11/13/2025 +1 days VulDB entry last update

Sourcesinfo

Advisory: help.zscaler.com
Status: Confirmed

CVE: CVE-2025-54983 (🔒)
GCVE (CVE): GCVE-0-2025-54983
GCVE (VulDB): GCVE-100-332067
CERT Bund: WID-SEC-2025-2578 - ZScaler Client Connector: Schwachstelle erm&ouml;glicht Umgehen von Sicherheitsvorkehrungen
CNNVD: CNNVD-202511-1522 - Zscaler Client Connector 安全漏洞

Entryinfo

Created: 11/12/2025 07:29
Updated: 11/13/2025 17:44
Changes: 11/12/2025 07:29 (63), 11/12/2025 12:27 (7), 11/13/2025 17:44 (6)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion

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