CVE-2020-2506: QNAP Helpdesk Improper Access Control Vulnerability

Critical severity, CVSS 9.8. Actively exploited: in CISA KEV since 2022-03-25. EPSS: 2% chance of exploitation in the next 30 days.

The vulnerability have been reported to affect earlier versions of QTS. If exploited, this improper access control vulnerability could allow attackers to compromise the security of the software by gaining privileges, or reading sensitive information. This issue affects: QNAP Systems Inc. Helpdesk versions prior to 3.0.3.

Affected products

• QNAP Helpdesk: before 3.0.3 (fixed in 3.0.3)

Published 2021-02-03. Last modified 2026-06-17.