How severe is CVE-2020-2500?

CVE-2020-2500 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-2500 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-2500?

CVE-2020-2500 affects Qnap Helpdesk. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-2500?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2020-2500 published?

CVE-2020-2500 was published on 2020-07-01 and last updated on 2026-06-17.

CVE-2020-2500

CVE-2020-2500 is a critical-severity vulnerability in Qnap Helpdesk with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-798.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 6.4
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-798
Affected product: Qnap Helpdesk
Published: 2020-07-01
Last modified: 2026-06-17

Description

This improper access control vulnerability in Helpdesk allows attackers to get control of QNAP Kayako service. Attackers can access the sensitive data on QNAP Kayako server with API keys. We have replaced the API key to mitigate the vulnerability, and already fixed the issue in Helpdesk 3.0.1 and later versions.

Frequently asked questions

What is CVE-2020-2500?: This improper access control vulnerability in Helpdesk allows attackers to get control of QNAP Kayako service. Attackers can access the sensitive data on QNAP Kayako server with API keys. We have replaced the API key to mitigate the vulnerability, and already fixed the issue in Helpdesk 3.0.1 and later versions.
How severe is CVE-2020-2500?: CVE-2020-2500 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-2500 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-2500?: CVE-2020-2500 affects Qnap Helpdesk. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-2500?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2020-2500 published?: CVE-2020-2500 was published on 2020-07-01 and last updated on 2026-06-17.

References

https://www.qnap.com/zh-tw/security-advisory/qsa-20-03

Affected products (1)

cpe:2.3:a:qnap:helpdesk:*:*:*:*:*:*:*:*

More vulnerabilities in Qnap Helpdesk

CVE-2020-2507 — Critical (CVSS 9.8): The vulnerability have been reported to affect earlier versions of QTS. If exploited, this command injection…
CVE-2018-0714 — Critical (CVSS 9.8): Command injection vulnerability in Helpdesk versions 1.1.21 and earlier in QNAP QTS 4.2.6 build 20180531, QTS 4.3.3…
CVE-2024-50394 — High (CVSS 8.8): An improper certificate validation vulnerability has been reported to affect Helpdesk. If exploited, the vulnerability…
CVE-2021-28814 — High (CVSS 8.8): An improper access control vulnerability has been reported to affect QNAP NAS. If exploited, this vulnerability allows…
CVE-2018-0728 — High (CVSS 7.5): This improper access control vulnerability in Helpdesk allows attackers to access the system logs. To fix the…
CVE-2020-2506 — High (CVSS 7.3): The vulnerability have been reported to affect earlier versions of QTS. If exploited, this improper access control…

All CVEs affecting Qnap Helpdesk →

Other CWE-798 (Use of Hard-coded Credentials) vulnerabilities

CVE-2026-13768 — Critical (CVSS 10.0): Gardyn devices expose a privileged iothubowner key. Access to this key will allow a malicious user to invoke an IoTHub…
CVE-2026-45631 — Critical (CVSS 10.0): Dokploy is a free, self-hostable Platform as a Service (PaaS). From 0.27.0 to before 0.29.3, a hardcoded…
CVE-2026-22769 — Critical (CVSS 10.0): Dell RecoverPoint for Virtual Machines, versions prior to 6.0.3.1 HF1, contain a hardcoded credential vulnerability.…
CVE-2025-42890 — Critical (CVSS 10.0): SQL Anywhere Monitor (Non-GUI) baked credentials into the code,exposing the resources or functionality to unintended…
CVE-2025-7503 — Critical (CVSS 10.0): An OEM IP camera manufactured by Shenzhen Liandian Communication Technology LTD exposes a Telnet service (port 23) with…
CVE-2025-20309 — Critical (CVSS 10.0): A vulnerability in Cisco Unified Communications Manager (Unified CM) and Cisco Unified Communications Manager Session…

Browse all CWE-798 (Use of Hard-coded Credentials) vulnerabilities →