CVE-2020-2506VulnerabilityPublished 03/25/2022Updated 10/24/2026

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

Affects QNAP Systems HelpdeskSource CISA KEV

Severity

High

No CVSS score published yet

Exploitation: Actively exploited – in CISA KEV since 03/25/2022
KEV deadline: 04/15/2022
EPSS: 2.0% chance of exploitation in 30 days – higher than 80% of CVEs

What to do

CISA required action

Apply updates per vendor instructions.

nvd.nist.gov/vuln/detail/CVE-2020-2506 (opens in a new tab)

Description

QNAP Helpdesk contains an improper access control vulnerability that could allow an attacker to gain elevated privileges or access sensitive information. This vulnerability has been exploited in the wild and is considered high severity. No specific affected versions or patch information is provided.

Summary

CVE-2020-2506 is an improper access control vulnerability in QNAP Helpdesk. The flaw allows attackers to bypass access restrictions, potentially leading to privilege escalation or unauthorized disclosure of sensitive data. The vulnerability has been observed to be exploited in the wild, indicating active threat activity targeting this issue.

Impact

Successful exploitation can result in attackers gaining unauthorized privileges or reading sensitive information from the QNAP Helpdesk system. This can compromise system integrity and confidentiality.

Mitigation

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, monitor vendor communications for updates and apply any recommended temporary mitigations.

Weaknesses

CWE-284Improper Access Control (opens in a new tab)

What to do

Description

AnalysisAI-generated, updated 10/24/2026, 11:10:45 UTC

Weaknesses

References

Related threats