CVE-2020-2506
improper access control vulnerability in Helpdesk
- High 7.3
- Exploited: added to CISA KEV 25 Mar 2022
Description
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.
Key facts
- Published
- 3 Feb 2021
- Last changed
- 21 Oct 2025
- Assigned by
- qnap
- KEV added
- 25 Mar 2022
- KEV fix due
- 15 Apr 2022
- EPSS
- 2.006% likely to be exploited in the next 30 days, higher than 81.152% of CVEs (scores for 15 Nov 2026)
- SSVC (CISA)
- Exploitation: active; Automatable: yes; Technical impact: partial
Severity scores
Each score is shown as its source gave it. They are not averaged or merged.
- 7.3CVSS 3.1, Highfrom the CNA (qnap)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
What to do
- QNAP has already fixed these issues in Helpdesk 3.0.3 and later versions.CNA solution statement
- Apply updates per vendor instructions.CISA KEV required action
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| QNAP Systems Inc. | Helpdesk |
|
Timeline
- 3 Feb 2021 Published
- 25 Mar 2022 CVE-2020-2506 added to CISA KEV
- 25 Mar 2022 Added to the CISA KEV catalogue