What is CVE-2021-44554?

CVE-2021-44554 is a medium-severity vulnerability in Cybelesoft Thinfinity Virtualui, classified under Observable Discrepancy. CVSS score: 5.3/10. Published 2021-12-20.

How severe is CVE-2021-44554?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Is CVE-2021-44554 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Cybelesoft Thinfinity Virtualui

CVE-2021-44554

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.

EPSS: 0.010 (60.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

Cybelesoft Thinfinity_virtualui
N/a — versions n/a

Weakness classification (CWE)

CWE-203 — Observable Discrepancy

Public proof-of-concept exploits

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC, Issue Tracking)

Frequently asked questions

What is CVE-2021-44554?: CVE-2021-44554 is a medium-severity vulnerability in Cybelesoft Thinfinity Virtualui, classified under Observable Discrepancy. CVSS score: 5.3/10. Published 2021-12-20.
How severe is CVE-2021-44554?: Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2021-44554 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.