CVE-2025-41251
CVE-2025-41251 is a high-severity vulnerability with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-640.
Key facts
- Severity: High (CVSS 3.x base score 8.1)
- EPSS exploit prediction: 1% (59th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-31600
- Weakness: CWE-640
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is CVE-2025-41251?
- 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.
- How severe is CVE-2025-41251?
- CVE-2025-41251 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2025-41251 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2025-41251?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2025-41251 have an EU (EUVD) identifier?
- Yes. CVE-2025-41251 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-31600.
- When was CVE-2025-41251 published?
- CVE-2025-41251 was published on 2025-09-29 and last updated on 2026-06-17.
References
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