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CVE-2025-41252— Username enumeration vulnerability

Quick assessment

Affected
VMware NSX
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

VMware Cloud Foundation和VMware NSX都是美国威睿（VMware）公司的产品。VMware Cloud Foundation是一套一体化混合云平台。该平台包括运维自动化、基础架构自动配置和集成式生命周期管理等功能。VMware NSX是一个完整的 L2-L7 网络和安全虚拟化平台。为虚机提供了虚拟化的网络，把虚机和物理网络相隔离，做到了网络服务与具体的物理网络设备无关，使得用户在网络设备的选择和采购上有着更大的灵活性。 VMware Cloud Foundation和VMwa

CVSS 7.5 · High EPSS 0.69% · P51

Possible ATT&CK Techniques 1 AI

T1087 · Account Discovery
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I. Basic Information for CVE-2025-41252

Vulnerability Information
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Vulnerability Title
Username enumeration vulnerability
Source: CVE Program / CVE List V5
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. 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过差异性导致的信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
VMware Cloud Foundation和VMware NSX 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
VMware Cloud Foundation和VMware NSX都是美国威睿（VMware）公司的产品。VMware Cloud Foundation是一套一体化混合云平台。该平台包括运维自动化、基础架构自动配置和集成式生命周期管理等功能。VMware NSX是一个完整的 L2-L7 网络和安全虚拟化平台。为虚机提供了虚拟化的网络，把虚机和物理网络相隔离，做到了网络服务与具体的物理网络设备无关，使得用户在网络设备的选择和采购上有着更大的灵活性。 VMware Cloud Foundation和VMwa
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
VMware NSX VMware NSX 9.x.x.x, 4.2.x, 4.1.x, 4.0.x -

II. Public POCs for CVE-2025-41252

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III. Intelligence Information for CVE-2025-41252

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Other References for CVE-2025-41252 (1)

Same Patch Batch · VMware · 2025-09-29 · 6 CVEs total

CVE-2025-41250 8.5 HIGH Header injection vulnerability
CVE-2025-41251 8.1 HIGH Weak password recovery vulnerability
CVE-2025-41244 7.8 HIGH VMSA-2025-0015: VMware Aria Operations and VMware Tools updates address multiple vulnerabi
CVE-2025-41246 7.6 HIGH Improper authorisation vulnerability
CVE-2025-41245 4.9 MEDIUM VMSA-2025-0015: VMware Aria Operations and VMware Tools updates address multiple vulnerabi

IV. Related Vulnerabilities

Same product: NSX
Same vendor: VMware
Same weakness: CWE-203

V. Comments for CVE-2025-41252

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