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.