QNAP

CVE-2020-2507: command injection vulnerability in Helpdesk

Is it exploited?

Reported, not confirmed by CISA. VulnCheck KEV lists it as exploited in the wild. CISA has not added it to its Known Exploited Vulnerabilities catalog as of 29 Oct 2026.

VulnCheck KEV lists it since 5 Mar 2021. It cites 83 public reports, the first from 5 Mar 2021.

How likely is exploitation in the next 30 days?

3.1%

Up from 3% on 22 Oct 2026.

EPSS score, percentile 87.6 of all scored records. A probability estimated by FIRST, not a report of exploitation.

How severe?

9.8 Critical

CVSS v3.1 base score, given by the CNA

What should I do?

QNAP has already fixed these issues in Helpdesk 3.0.3 and later versions.Solution from the CVE record.

CISA has set no required action, because the vulnerability is not in KEV.

The CVE record links no vendor advisory, patch or mitigation.

Which versions are affected?

Affected

before 3.0.3

Versions by product

Source: CISA KEV 2026.10.29, as of 29 Oct 2026; VulnCheck KEV, as of 30 Oct 2026; FIRST EPSS, as of 29 Oct 2026; CVE List, as of 30 Oct 2026. About the data.

Description

command injection vulnerability in Helpdesk

The vulnerability have been reported to affect earlier versions of QTS. If exploited, this command injection vulnerability could allow remote attackers to run arbitrary commands. This issue affects: QNAP Systems Inc. Helpdesk versions prior to 3.0.3.

Source: CVE List, as of 30 Oct 2026. About the data.

What to do

Advisories and patches

The CVE record links no vendor advisory, patch or mitigation.

This summary is based on the CVE record as of 30 Oct 2026. Check the vendor's advisory before you act: affected versions and fixes can change.

Affected products and versions

Versions by product, as listed in the CVE record (1 product)

QNAP Systems Inc. Helpdesk
Status	Versions
Affected	before 3.0.3

Source: CVE List, as of 30 Oct 2026. About the data.

Weakness

CWE-77, CWE-78

CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')
CWE-78: OS Command Injection

CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record.

Timeline

Date	Event
3 Feb 2021	CVE record published
16 Sep 2024	CVE record last updated

References

qnap.com

Known exploited QNAP vulnerabilities

CVE-2023-47565: QNAP VioStor NVR OS Command Injection Vulnerability (added 21 Dec 2023)
CVE-2022-27593: QNAP Photo Station Externally Controlled Reference Vulnerability (added 8 Sep 2022)
CVE-2019-7192: QNAP Photo Station Improper Access Control Vulnerability (added 8 Jun 2022)
CVE-2019-7193: QNAP QTS Improper Input Validation Vulnerability (added 8 Jun 2022)
CVE-2019-7194: QNAP Photo Station Path Traversal Vulnerability (added 8 Jun 2022)