What’s Vulnerable › Vulnerabilities
CVE-2021-44554
- Severity: medium (CVSS 5.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 1.1% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2021-12-20 · updated 2026-06-17
- Weakness: CWE-203
Description
Thinfinity VirtualUI before 3.0 allows a malicious actor to enumerate users registered in the OS (Windows) through the /changePassword URI. By accessing the vector, an attacker can determine if a username exists thanks to the message returned; it can be presented in different languages according to the configuration of VirtualUI. Common users are administrator, admin, guest and krgtbt.
Affected products
- Cybelesoft Thinfinity Virtualui: before 3.0 — fixed in 3.0
How to fix
Upgrade to a fixed version: Cybelesoft Thinfinity Virtualui 3.0. Check the vendor advisory for mitigations.
References
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