Description
Description: VMware NSX contains a username enumeration vulnerability. An unauthenticated malicious actor may exploit this to enumerate valid usernames, potentially leading to unauthorized access attempts.


Impact: Username enumeration → facilitates unauthorized access.


Attack Vector: Remote, unauthenticated.


Severity: Important.


CVSSv3: 7.5 (High).


Acknowledgments: Reported by the National Security Agency.


Affected Products:



* VMware NSX 9.x.x.x, 4.2.x, 4.1.x, 4.0.x

* NSX-T 3.x

* VMware Cloud Foundation (with NSX) 5.x, 4.5.x












Fixed Versions: 



* NSX 9.0.1.0; 4.2.2.2/4.2.3.1 http://4.2.2.2/4.2.3.1 ; 4.1.2.7; NSX-T 3.2.4.3; CCF async patch (KB88287).






Workarounds: None.
Published: 2025-09-29
Score: 7.5 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2025-31599 Description: VMware NSX contains a username enumeration vulnerability. An unauthenticated malicious actor may exploit this to enumerate valid usernames, potentially leading to unauthorized access attempts. Impact: Username enumeration → facilitates unauthorized access. Attack Vector: Remote, unauthenticated. Severity: Important. CVSSv3: 7.5 (High). Acknowledgments: Reported by the National Security Agency. Affected Products: * VMware NSX 9.x.x.x, 4.2.x, 4.1.x, 4.0.x * NSX-T 3.x * VMware Cloud Foundation (with NSX) 5.x, 4.5.x Fixed Versions:  * NSX 9.0.1.0; 4.2.2.2/4.2.3.1 http://4.2.2.2/4.2.3.1 ; 4.1.2.7; NSX-T 3.2.4.3; CCF async patch (KB88287). Workarounds: None.
History

Tue, 30 Sep 2025 09:00:00 +0000

Type Values Removed Values Added
First Time appeared Vmware
Vmware cloud Foundation
Vmware nsx
Vmware nsx-t
Vendors & Products Vmware
Vmware cloud Foundation
Vmware nsx
Vmware nsx-t

Mon, 29 Sep 2025 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Mon, 29 Sep 2025 19:15:00 +0000

Type Values Removed Values Added
Description Description: VMware NSX contains a username enumeration vulnerability. An unauthenticated malicious actor may exploit this to enumerate valid usernames, potentially leading to unauthorized access attempts. Impact: Username enumeration → facilitates unauthorized access. Attack Vector: Remote, unauthenticated. Severity: Important. CVSSv3: 7.5 (High). Acknowledgments: Reported by the National Security Agency. Affected Products: * VMware NSX 9.x.x.x, 4.2.x, 4.1.x, 4.0.x * NSX-T 3.x * VMware Cloud Foundation (with NSX) 5.x, 4.5.x Fixed Versions:  * NSX 9.0.1.0; 4.2.2.2/4.2.3.1 http://4.2.2.2/4.2.3.1 ; 4.1.2.7; NSX-T 3.2.4.3; CCF async patch (KB88287). Workarounds: None.
Title Username enumeration vulnerability
Weaknesses CWE-203
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

Subscriptions

Vmware Cloud Foundation Nsx Nsx-t
cve-icon MITRE

Status: PUBLISHED

Assigner: vmware

Published:

Updated: 2025-09-29T19:14:38.914Z

Reserved: 2025-04-16T09:30:25.625Z

Link: CVE-2025-41252

cve-icon Vulnrichment

Updated: 2025-09-29T19:14:30.473Z

cve-icon NVD

Status : Deferred

Published: 2025-09-29T19:15:35.317

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

Link: CVE-2025-41252

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-09-30T08:47:50Z

Weaknesses