CVE-2025-41251
Weak password recovery vulnerability
VMware NSX contains a weak password recovery mechanism vulnerability. An unauthenticated malicious actor may exploit this to enumerate valid usernames, potentially enabling brute-force attacks.
Impact: Username enumeration → credential brute force risk. Attack Vector: Remote, unauthenticated. Severity: Important. CVSSv3: 8.1 (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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Weak password recovery vulnerability
VMware NSX contains a weak password recovery mechanism vulnerability. An unauthenticated malicious actor may exploit this to enumerate valid usernames, potentially enabling brute-force attacks.
Impact: Username enumeration → credential brute force risk. Attack Vector: Remote, unauthenticated. Severity: Important. CVSSv3: 8.1 (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.
- Record
CVE-2025-41251- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-640
- Updated
- 2026-11-02
EUVDEUVD-2025-31600
VMware NSX contains a weak password recovery mechanism vulnerability. An unauthenticated malicious actor may exploit this to enumerate valid usernames, potentially enabling brute-force attacks.
Impact: Username enumeration → credential brute force risk. Attack Vector: Remote, unauthenticated. Severity: Important. CVSSv3: 8.1 (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.
- Record
EUVD-2025-31600- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-5vpj-22hp-chfg
VMware NSX contains a weak password recovery mechanism vulnerability. An unauthenticated...
VMware NSX contains a weak password recovery mechanism vulnerability. An unauthenticated malicious actor may exploit this to enumerate valid usernames, potentially enabling brute-force attacks.
Impact: Username enumeration → credential brute force risk. Attack Vector: Remote, unauthenticated. Severity: Important. CVSSv3: 8.1 (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.
- Record
GHSA-5vpj-22hp-chfg- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-640
- Updated
- 2026-11-02
NVD
VMware NSX contains a weak password recovery mechanism vulnerability. An unauthenticated malicious actor may exploit this to enumerate valid usernames, potentially enabling brute-force attacks.
Impact: Username enumeration → credential brute force risk. Attack Vector: Remote, unauthenticated. Severity: Important. CVSSv3: 8.1 (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.
- Record
CVE-2025-41251- CVSS 3.1
- 8.1 High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-640
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-41251 is a high vulnerability (CVSS 8.1) in Vmware Nsx, published September 29, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.83%, the 57th percentile. No source names a fixed version.