CVE-2025-22481Network attack vector

Authenticated command execution via undisclosed injection

Published Jun 6, 2025 · Updated Feb 26, 2026

Command injection in QNAP QTS and QuTS hero allows remote authenticated users to execute arbitrary commands over the network. QNAP has not disclosed the affected interface, input, function, or command-construction operation. A valid user account is required; successful exploitation grants command execution on the NAS, with confidentiality, integrity, and availability consequences.

CVSS severity8.7
High
EPSS probability0.95%
Next 30 days · Sep 17, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Command injection in QNAP QTS and QuTS hero allows remote authenticated users to execute arbitrary commands over the network. QNAP has not disclosed the affected interface, input, function, or command-construction operation. A valid user account is required; successful exploitation grants command execution on the NAS, with confidentiality, integrity, and availability consequences.

The record

CVE
CVE-2025-22481
Published
Jun 6, 2025
Updated
Feb 26, 2026
Vendor
Linn Products Limited
Product
QuTS hero
Classifications
CWE-78, CWE-77, CAPEC-88, T1059.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 6, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 26, 2026Record 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=h5.2.x <h5.2.4.3079 build 20250321

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Linn Products Limited · QuTS heroversion=h5.2.x <h5.2.4.3079 build 20250321
Linn Products Limited · QTSversion=5.2.x <5.2.4.3079 build 20250321

Published CVSS scores

8.7QNAP Systems, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.8NIST NVDCVSS: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 11, 2026Sep 17, 2026
Latest reporting daySep 17, 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')
CWE-77Improper Neutralization of Special Elements used in an Command ('Command Injection')
CAPEC-88OS Command Injection
T1059.004Unix 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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