CVE-2021-28807: QNAP Q'center

Medium severity, CVSS 5.4. EPSS: 1.4% chance of exploitation in the next 30 days.

A post-authentication reflected XSS vulnerability has been reported to affect QNAP NAS running Q’center. If exploited, this vulnerability allows remote attackers to inject malicious code. QNAP have already fixed this vulnerability in the following versions of Q’center: QTS 4.5.3: Q’center v1.12.1012 and later QTS 4.3.6: Q’center v1.10.1004 and later QTS 4.3.3: Q’center v1.10.1004 and later QuTS hero h4.5.2: Q’center v1.12.1012 and later QuTScloud c4.5.4: Q’center v1.12.1012 and later

Affected products

• QNAP Q'center: before 1.12.1012 (fixed in 1.12.1012); before 1.10.1004 (fixed in 1.10.1004)

Published 2021-06-03. Last modified 2026-06-17.