CVE-2024-21906Network attack vector

Administrator command execution via undisclosed network input

Published Sep 6, 2024 · Updated Sep 6, 2024

OS command injection in QNAP QTS 5.1.x and QuTS hero h5.1.x allows remote authenticated administrators to execute commands via a network. QNAP has not published the affected component, input field, or operation that incorporates untrusted data into an operating-system command. Administrator privileges and network access are required; successful exploitation executes operating-system commands and can read, modify, or interrupt system resources.

CVSS severity4.7
Medium
EPSS probability0.81%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in QNAP QTS 5.1.x and QuTS hero h5.1.x allows remote authenticated administrators to execute commands via a network. QNAP has not published the affected component, input field, or operation that incorporates untrusted data into an operating-system command. Administrator privileges and network access are required; successful exploitation executes operating-system commands and can read, modify, or interrupt system resources.

The record

CVE
CVE-2024-21906
Published
Sep 6, 2024
Updated
Sep 6, 2024
Vendor
Linn Products Limited
Product
QuTS hero
Classifications
CWE-78, T1059
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Sep 6, 2024CVE publishedPublication date reported by the CVE source.
  2. Sep 6, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=h5.1.x <h5.1.8.2823 build 20240712

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Linn Products Limited · QuTS heroversion=h5.1.x <h5.1.8.2823 build 20240712
Linn Products Limited · QTSversion=5.1.x <5.1.8.2823 build 20240712

Published CVSS scores

4.7QNAP Systems, Inc.CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059Command and Scripting Interpreter

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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