CVE-2023-50358Public exploit

Unauthenticated command execution via quick.cgi NTP input

Published Feb 13, 2024 · Updated May 9, 2025

OS command injection in QNAP QTS, QuTS hero, and QuTScloud allows remote attackers to execute arbitrary commands through quick.cgi. quick.cgi writes the unauthenticated SPECIFIC_SERVER value into the NTP Address field of a temporary configuration file, then passes the resulting ntpdate command line to system(). Network access to the NAS system port is sufficient, and successful exploitation grants command execution with the CGI process's privileges.

CVSS severity5.8
Medium
EPSS probability13.52%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

OS command injection in QNAP QTS, QuTS hero, and QuTScloud allows remote attackers to execute arbitrary commands through quick.cgi. quick.cgi writes the unauthenticated SPECIFIC_SERVER value into the NTP Address field of a temporary configuration file, then passes the resulting ntpdate command line to system(). Network access to the NAS system port is sufficient, and successful exploitation grants command execution with the CGI process's privileges.

The record

CVE
CVE-2023-50358
Published
Feb 13, 2024
Updated
May 9, 2025
Vendor
Linn Products Limited
Product
QuTS hero
Classifications
CWE-78, T1190, T1059.004
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 13, 2024CVE publishedPublication date reported by the CVE source.
  2. May 9, 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.x <h4.5.4.2626 build 20231225
  2. Affected versionversion=h5.x <h5.1.5.2647 build 20240118

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Linn Products Limited · QuTS heroversion=h4.x <h4.5.4.2626 build 20231225; version=h5.x <h5.1.5.2647 build 20240118
Linn Products Limited · QuTScloudversion=c5.x <c5.1.5.2651
Linn Products Limited · QTSversion=4.2.x <4.2.6 build 20240131; version=4.3.4 <4.3.4.2675 build 20240131; version=4.3.6, 4.3.5 <4.3.6.2665 build 20240131; version=4.3.x <4.3.3.2644 build 20240131; version=4.5.x, 4.4.x <4.5.4.2627 build 20231225; version=5.x <5.1.5.2645 build 20240116

Published CVSS scores

5.8QNAP Systems, Inc.CVSS:3.1/AV:A/AC:H/PR:N/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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1190Exploit Public-Facing Application
T1059.004Command and Scripting Interpreter: Unix Shell

Public exploit references

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo