---
id: CVE-2025-41252
title: 'Description: VMware NSX contains a username enumeration vulnerability'
summary: >-
  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 …
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-203
published: '2025-09-29'
updated: '2026-10-09'
sourceUpdated: '2026-10-09T09:10:00.213'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-41252'
references:
  - url: >-
      https://https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/36150
    label: security@vmware.com
tags:
  - nvd
epss: 0.00686
epssPercentile: 0.51146
ingestedAt: '2026-10-09T09:31:00.985Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.