CVE-2020-2509VulnerabilityPublished 04/11/2022Updated 10/24/2026

CVE-2020-2509: QNAP Network-Attached Storage (NAS) Command Injection Vulnerability

Affects QNAP QNAP Network-Attached Storage (NAS)Source CISA KEV

Severity

High

No CVSS score published yet

Exploitation: Actively exploited – in CISA KEV since 04/11/2022
KEV deadline: 05/02/2022
EPSS: 34.0% chance of exploitation in 30 days – higher than 98% of CVEs

What to do

CISA required action

Apply updates per vendor instructions.

nvd.nist.gov/vuln/detail/CVE-2020-2509 (opens in a new tab)

Description

QNAP Network-Attached Storage (NAS) devices have a command injection vulnerability (CVE-2020-2509) that allows remote attackers to execute arbitrary commands. This vulnerability has been exploited in the wild. No specific affected versions or patch information is provided.

Summary

CVE-2020-2509 is a command injection vulnerability in QNAP NAS devices that enables remote code execution by attackers. The vulnerability is identified by CWEs 77 and 78, which relate to improper neutralization of special elements used in OS commands. Exploitation has been observed in the wild, indicating active threat. However, no vendor advisory or patch information is available in the provided data.

Impact

Successful exploitation allows remote attackers to execute arbitrary commands on affected QNAP NAS devices, potentially leading to full system compromise. This can result in unauthorized access, data theft, or disruption of NAS services.

Mitigation

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a patch is confirmed, monitor official QNAP communications for updates and apply any recommended mitigations.

CVE-2020-2509: QNAP Network-Attached Storage (NAS) Command Injection Vulnerability

What to do

Description

Summary

Impact

Mitigation

Weaknesses

References

What to do

Description

AnalysisAI-generated, updated 10/24/2026, 11:25:55 UTC

Weaknesses

References

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