{"api_version":"1","generated_at":"2026-11-03T10:18:19+00:00","cve":"CVE-2025-41252","urls":{"html":"https://cve.report/CVE-2025-41252","api":"https://cve.report/api/cve/CVE-2025-41252.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2025-41252","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2025-41252"},"summary":{"title":"Username enumeration vulnerability","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.\n\n\nImpact: Username enumeration → facilitates unauthorized access.\n\n\nAttack Vector: Remote, unauthenticated.\n\n\nSeverity: Important.\n\n\nCVSSv3: 7.5 (High).\n\n\nAcknowledgments: Reported by the National Security Agency.\n\n\nAffected Products:\n\n\n\n  *  VMware NSX 9.x.x.x, 4.2.x, 4.1.x, 4.0.x\n\n  *  NSX-T 3.x\n\n  *  VMware Cloud Foundation (with NSX) 5.x, 4.5.x\n\n\n\n\n\n\n\n\n\n\n\n\nFixed Versions: \n\n\n\n  *  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).\n\n\n\n\n\n\nWorkarounds: None.","state":"PUBLISHED","assigner":"vmware","published_at":"2025-09-29 19:15:35","updated_at":"2026-10-09 09:10:00"},"problem_types":["CWE-203","CWE-203 CWE-203 Observable Discrepancy"],"metrics":[{"version":"3.1","source":"security@vmware.com","type":"Secondary","score":"7.5","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"}},{"version":"3.1","source":"CNA","type":"CVSS","score":"7.5","severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","data":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"}}],"references":[{"url":"https://https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/36150","name":"https://https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/36150","refsource":"security@vmware.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-41252","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-41252","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"VMware","product":"NSX","version":"affected VMware NSX 9.x.x.x, 4.2.x, 4.1.x, 4.0.x custom","platforms":[]},{"source":"CNA","vendor":"VMware","product":"NSX","version":"affected VMware NSX-T 3.x custom","platforms":[]},{"source":"CNA","vendor":"VMware","product":"NSX","version":"affected VMware Cloud Foundation (with NSX) 5.x, 4.5.x","platforms":[]},{"source":"CNA","vendor":"VMware","product":"NSX","version":"unaffected VMware NSX 9.0.1.0; 4.2.2.2/4.2.3.1; 4.1.2.7; NSX-T 3.2.4.3; CCF async patch (KB88287)","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2025","cve_id":"41252","cve":"CVE-2025-41252","epss":"0.006860000","percentile":"0.512680000","score_date":"2026-10-11","updated_at":"2026-10-12 00:13:21"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"other":{"content":{"id":"CVE-2025-41252","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","timestamp":"2025-09-29T19:14:25.259914Z","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2025-09-29T19:14:38.914Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"defaultStatus":"unaffected","product":"NSX","vendor":"VMware","versions":[{"status":"affected","version":"VMware NSX 9.x.x.x, 4.2.x, 4.1.x, 4.0.x","versionType":"custom"},{"status":"affected","version":"VMware NSX-T 3.x","versionType":"custom"},{"status":"affected","version":"VMware Cloud Foundation (with NSX) 5.x, 4.5.x"},{"status":"unaffected","version":"VMware NSX 9.0.1.0; 4.2.2.2/4.2.3.1; 4.1.2.7; NSX-T 3.2.4.3; CCF async patch (KB88287)"}]}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p><b></b></p><p>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.</p>\n<p>Impact: Username enumeration → facilitates unauthorized access.</p>\n<p>Attack Vector: Remote, unauthenticated.</p>\n<p>Severity: Important.</p>\n<p>CVSSv3: 7.5 (High).</p>\n<p>Acknowledgments: Reported by the National Security Agency.</p>\n<p>Affected Products:</p><p></p><ul><li>VMware NSX 9.x.x.x, 4.2.x, 4.1.x, 4.0.x<br></li><li>NSX-T 3.x<br></li><li>VMware Cloud Foundation (with NSX) 5.x, 4.5.x<br></li></ul><p></p>\n\n\n<p><br></p>\n<p>Fixed Versions:&nbsp;</p><p></p><ul><li>NSX 9.0.1.0; <a target=\"_blank\" rel=\"nofollow\" href=\"http://4.2.2.2/4.2.3.1\">4.2.2.2/4.2.3.1</a>; 4.1.2.7; NSX-T 3.2.4.3; CCF async patch (KB88287).<br></li></ul><p></p>\n<p>Workarounds: None.</p><br>"}],"value":"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.\n\n\nImpact: Username enumeration → facilitates unauthorized access.\n\n\nAttack Vector: Remote, unauthenticated.\n\n\nSeverity: Important.\n\n\nCVSSv3: 7.5 (High).\n\n\nAcknowledgments: Reported by the National Security Agency.\n\n\nAffected Products:\n\n\n\n  *  VMware NSX 9.x.x.x, 4.2.x, 4.1.x, 4.0.x\n\n  *  NSX-T 3.x\n\n  *  VMware Cloud Foundation (with NSX) 5.x, 4.5.x\n\n\n\n\n\n\n\n\n\n\n\n\nFixed Versions: \n\n\n\n  *  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).\n\n\n\n\n\n\nWorkarounds: None."}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-203","description":"CWE-203 Observable Discrepancy","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2025-09-29T19:02:07.283Z","orgId":"dcf2e128-44bd-42ed-91e8-88f912c1401d","shortName":"vmware"},"references":[{"url":"https://https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/36150"}],"source":{"discovery":"UNKNOWN"},"title":"Username enumeration vulnerability","x_generator":{"engine":"Vulnogram 0.2.0"}}},"cveMetadata":{"assignerOrgId":"dcf2e128-44bd-42ed-91e8-88f912c1401d","assignerShortName":"vmware","cveId":"CVE-2025-41252","datePublished":"2025-09-29T19:02:07.283Z","dateReserved":"2025-04-16T09:30:25.625Z","dateUpdated":"2025-09-29T19:14:38.914Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.1"},"nvd":{"publishedDate":"2025-09-29 19:15:35","lastModifiedDate":"2026-10-09 09:10:00","problem_types":["CWE-203","CWE-203 CWE-203 Observable Discrepancy"],"metrics":{"cvssMetricV31":[{"source":"security@vmware.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":3.9,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2025-09-29T19:14:25.259914Z","id":"CVE-2025-41252","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2025","CveId":"41252","Ordinal":"1","Title":"Username enumeration vulnerability","CVE":"CVE-2025-41252","Year":"2025"},"notes":[{"CveYear":"2025","CveId":"41252","Ordinal":"1","NoteData":"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.\n\n\nImpact: Username enumeration → facilitates unauthorized access.\n\n\nAttack Vector: Remote, unauthenticated.\n\n\nSeverity: Important.\n\n\nCVSSv3: 7.5 (High).\n\n\nAcknowledgments: Reported by the National Security Agency.\n\n\nAffected Products:\n\n\n\n  *  VMware NSX 9.x.x.x, 4.2.x, 4.1.x, 4.0.x\n\n  *  NSX-T 3.x\n\n  *  VMware Cloud Foundation (with NSX) 5.x, 4.5.x\n\n\n\n\n\n\n\n\n\n\n\n\nFixed Versions: \n\n\n\n  *  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).\n\n\n\n\n\n\nWorkarounds: None.","Type":"Description","Title":"Username enumeration vulnerability"}]}}}