CVE-2024-21898Network attack vector

Authenticated 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 users to execute commands via a network. QNAP has not disclosed the affected component, input field, or operation that passes untrusted data to an operating-system command. A low-privileged account and network reachability are required; successful exploitation runs commands with the vulnerable service's privileges.

CVSS severity8.8
High
EPSS probability1.21%
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 users to execute commands via a network. QNAP has not disclosed the affected component, input field, or operation that passes untrusted data to an operating-system command. A low-privileged account and network reachability are required; successful exploitation runs commands with the vulnerable service's privileges.

The record

CVE
CVE-2024-21898
Published
Sep 6, 2024
Updated
Sep 6, 2024
Vendor
Linn Products Limited
Product
QuTS hero
Classifications
CWE-78, CAPEC-88, T1059.004
Attack vector
network
Privileges
authenticated

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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=h5.1.0 <h5.1.6.2734_build_20240414
  2. Affected versionversion=h5.1.x <h5.1.6.2734 build 20240414

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Linn Products Limited · QuTS heroversion=h5.1.0 <h5.1.6.2734_build_20240414; version=h5.1.x <h5.1.6.2734 build 20240414
Linn Products Limited · QTSversion=5.1.0 <5.1.6.2722_build_20240402; version=5.1.x <5.1.6.2722 build 20240402

Published CVSS scores

8.8QNAP Systems, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CAPEC-88OS Command Injection
T1059.004Command and Scripting Interpreter: Unix Shell

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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