CVE-2023-23355Network attack vector

Authenticated command execution via undisclosed OS injection

Published Mar 29, 2023 · Updated Feb 12, 2025

OS command injection in QNAP QTS, QuTS hero, and QuTScloud allows remote authenticated administrators to execute arbitrary commands. QNAP has not disclosed the affected component, input, or operation that passes untrusted data to an operating-system command. Administrative access to a susceptible device is required; successful exploitation permits command execution with the vulnerable service's privileges.

CVSS severity6.6
Medium
EPSS probability1.23%
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, QuTS hero, and QuTScloud allows remote authenticated administrators to execute arbitrary commands. QNAP has not disclosed the affected component, input, or operation that passes untrusted data to an operating-system command. Administrative access to a susceptible device is required; successful exploitation permits command execution with the vulnerable service's privileges.

The record

CVE
CVE-2023-23355
Published
Mar 29, 2023
Updated
Feb 12, 2025
Vendor
Linn Products Limited
Product
QuTS hero
Classifications
CWE-78, CWE-77, T1059
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Mar 29, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 12, 2025Record 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=h4.5.* <h4.5.4.2374 build 20230417
  2. Affected versionversion=h5.0.* <h5.0.1.2348 build 20230324

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Linn Products Limited · QuTS heroversion=h4.5.* <h4.5.4.2374 build 20230417; version=h5.0.* <h5.0.1.2348 build 20230324
Linn Products Limited · QuTScloudversion=c5.0.1 <c5.0.1.2374
Linn Products Limited · QTSversion=4.5.* <4.5.4.2374 build 20230416; version=5.0.* <5.0.1.2346 build 20230322

Published CVSS scores

7.2NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
6.6QNAP Systems, Inc.CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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')
CWE-77Improper Neutralization of Special Elements used in a Command ('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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