CVE-2009-1803

FreePBX 2.5.1, and other 2.4.x, 2.5.x, and pre-release 2.6.x versions, generates different error messages for a failed login attempt depending on whether the user account exists, which allows remote attackers to enumerate valid usernames...

CVE-2009-1076

Sun Java System Identity Manager IdM 7.0 through 8.0 responds differently to failed use of the end-user question-based login feature depending on whether the user account exists, which allows remote attackers to enumerate valid usernames...

CVE-2000-1237

The POP3 server in FTGate returns an -ERR code after receiving an invalid USER request, which makes it easier for remote attackers to determine valid usernames and conduct brute force password guessing...

Bosch Rexroth ctrlX OS 安全漏洞

Bosch Rexroth ctrlX OS is a Linux-based real-time operating system from Bosch Rexroth, Germany, designed as an open control platform for industrial automation equipment. A security vulnerability exists in Bosch Rexroth ctrlX OS that stems from an improper login function that could lead to usernam...

CVE-2021-47664

Due to improper authentication mechanism an unauthenticated remote attacker can enumerate valid usernames...

Cisco Nexus Dashboard LDAP Username Enumeration (cisco-sa-nd-unenum-2xFFh472)

According to its self-reported version, Cisco Nexus Dashboard LDAP Username Enumeration is affected by a vulnerability. - A vulnerability in Cisco Nexus Dashboard could allow an unauthenticated, remote attacker to enumerate LDAP user accounts. This vulnerability is due to the improper handling of...

CVE-2021-47664

CVE-2021-47664 describes an authentication issue that allows an unauthenticated remote attacker to enumerate valid usernames. The initial entry provides a CVSS v3.1 base score of 5.3 (Medium) with Network attack vector, Low attack complexity, and no privileges required. The connected sources reit...

CVE-2021-47664 Enumeration of valid user names

Due to improper authentication mechanism an unauthenticated remote attacker can enumerate valid usernames...

CVE-2021-47664 Enumeration of valid user names

Due to improper authentication mechanism an unauthenticated remote attacker can enumerate valid usernames...

PT-2025-17725 · Franka Robotics · Franka Emika Robot

Name of the Vulnerable Software and Affected Versions: The product name cannot be determined. Description: An issue exists due to an improper authentication mechanism, allowing an unauthenticated remote attacker to enumerate valid usernames. Recommendations: At the moment, there is no information...

Franka Emika Robot 安全漏洞

Franka Emika Robot is a robot from the German company Franka. A security vulnerability exists in Franka Emika Robot that stems from an improper authentication mechanism that allows an unauthenticated, remote attacker to enumerate valid usernames...

PT-2025-17727

Name of the Vulnerable Software and Affected Versions Spring Security affected versions not specified Description The issue introduces a username enumeration vector. It affects the BCryptPasswordEncoder's maximum password length, which breaks timing attack mitigation. Recommendations At the momen...

📄 UJCMS 9.6.3 Insecure Direct Object Reference

UJCMS version 9.6.3 suffers from an insecure direct object reference vulnerability that enables user enumeration. Exploit Title: UJCMS 9.6.3 User Enumeration via IDOR Exploit Author: Cyd Tseng Date: 11 Dec 2024 Category: Web application Vendor Homepage: https://dromara.org/ Software Link:...

Usermin 2.100 - Username Enumeration

Exploit Title: Usermin 2.100 - Username Enumeration Date: 10.02.2024 Exploit Author: Kjesper Vendor Homepage: https://www.webmin.com/usermin.html Software Link: https://github.com/webmin/usermin Version: = 2.100 Tested on: Kali Linux CVE: CVE-2024-44762...

CVE-2025-31933

An unauthenticated attacker can check the existence of usernames in the system by querying an API...

CVE-2025-31933

An unauthenticated attacker can check the existence of usernames in the system by querying an API...

CVE-2025-27568

An unauthenticated attacker can get users' emails by knowing usernames. A password reset email will be sent in response to this unsolicited request...

CVE-2025-24487

An unauthenticated attacker can infer the existence of usernames in the system by querying an API...

CVE-2024-11084 Potential Username Enumeration in Helix ALM

Helix ALM prior to 2025.1 returns distinct error responses during authentication, allowing an attacker to determine whether a username exists...

CVE-2024-11084

CVE-2024-11084 affects Perforce Helix ALM prior to 2025.1. The issue is that authentication returns distinct error responses, enabling an attacker to determine whether a username exists (username enumeration). The connected sources (RH Red Hat, NVD, CVE Lists, CNNVD) corroborate the same descript...