Vulnerability Database

393,392

Total vulnerabilities in the database

CVE-2023-23369 — qnap / qts

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

An OS command injection vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow users to execute commands via a network.

We have already fixed the vulnerability in the following versions: Multimedia Console 2.1.2 ( 2023/05/04 ) and later Multimedia Console 1.4.8 ( 2023/05/05 ) and later QTS 5.1.0.2399 build 20230515 and later QTS 4.3.6.2441 build 20230621 and later QTS 4.3.4.2451 build 20230621 and later QTS 4.3.3.2420 build 20230621 and later QTS 4.2.6 build 20230621 and later Media Streaming add-on 500.1.1.2 ( 2023/06/12 ) and later Media Streaming add-on 500.0.0.11 ( 2023/06/16 ) and later

  • Published: Nov 3, 2023
  • Updated: Oct 3, 2026
  • CVE: CVE-2023-23369
  • Severity: Critical
  • Exploit:
  • CISA KEV:

CVSS v3:

  • Severity: Critical
  • Score: 9
  • AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Software Affected versions
qnap / qts = 5.1.0.2348-build_20230325
qnap / qts = 4.3.6.0895-build_20190328
qnap / qts = 4.3.6.0907-build_20190409
qnap / qts = 4.3.6.0923-build_20190425
qnap / qts = 4.3.6.0944-build_20190516
qnap / qts = 4.3.6.0959-build_20190531
qnap / qts = 4.3.6.0979-build_20190620
qnap / qts = 4.3.6.0993-build_20190704
qnap / qts = 4.3.6.1013-build_20190724
qnap / qts = 4.3.6.1033-build_20190813
qnap / qts = 4.3.6.1070-build_20190919
qnap / qts = 4.3.6.1154-build_20191212
qnap / qts = 4.3.6.1218-build_20200214
qnap / qts = 4.3.6.1263-build_20200330
qnap / qts = 4.3.6.1286-build_20200422
qnap / qts = 4.3.6.1333-build_20200608
qnap / qts = 4.3.6.1411-build_20200825
qnap / qts = 4.3.6.1446-build_20200929
qnap / qts = 4.3.6.1620-build_20210322
qnap / qts = 4.3.6.1663-build_20210504
qnap / qts = 4.3.6.1711-build_20210621
qnap / qts = 4.3.6.1750-build_20210730
qnap / qts = 4.3.6.1831-build_20211019
qnap / qts = 4.3.6.1907-build_20220103
qnap / qts = 4.3.6.1965-build_20220302
qnap / qts = 4.3.6.2050-build_20220526
qnap / qts = 4.3.6.2232-build_20221124
qnap / qts = 4.3.4.0899-build_20190322
qnap / qts = 4.3.4.1029-build_20190730
qnap / qts = 4.3.4.1082-build_20190921
qnap / qts = 4.3.4.1190-build_20200107
qnap / qts = 4.3.4.1282-build_20200408
qnap / qts = 4.3.4.1368-build_20200703
qnap / qts = 4.3.4.1417-build_20200821
qnap / qts = 4.3.4.1463-build_20201006
qnap / qts = 4.3.4.1632-build_20210324
qnap / qts = 4.3.4.1652-build_20210413
qnap / qts = 4.3.4.1976-build_20220303
qnap / qts = 4.3.4.2107-build_20220712
qnap / qts = 4.3.4.2242-build_20221124
qnap / qts = 4.3.3.0174-build_20170503
qnap / qts = 4.3.3.0868-build_20190322
qnap / qts = 4.3.3.0998-build_20190730
qnap / qts = 4.3.3.1051-build_20190921
qnap / qts = 4.3.3.1098-build_20191107
qnap / qts = 4.3.3.1161-build_20200109
qnap / qts = 4.3.3.1252-build_20200409
qnap / qts = 4.3.3.1315-build_20200611
qnap / qts = 4.3.3.1386-build_20200821
qnap / qts = 4.3.3.1432-build_20201006
qnap / qts = 4.3.3.1624-build_20210416
qnap / qts = 4.3.3.1677-build_20210608
qnap / qts = 4.3.3.1693-build_20210624
qnap / qts = 4.3.3.1799-build_20211008
qnap / qts = 4.3.3.1864-build_20211212
qnap / qts = 4.3.3.1945-build_20220303
qnap / qts = 4.3.3.2057-build_20220623
qnap / qts = 4.3.3.2211-build_20221124
qnap / qts = 4.2.6-build_20170517
qnap / qts = 4.2.6-build_20190322
qnap / qts = 4.2.6-build_20190730
qnap / qts = 4.2.6-build_20190921
qnap / qts = 4.2.6-build_20191107
qnap / qts = 4.2.6-build_20200109
qnap / qts = 4.2.6-build_20200421
qnap / qts = 4.2.6-build_20200611
qnap / qts = 4.2.6-build_20200821
qnap / qts = 4.2.6-build_20210327
qnap / qts = 4.2.6-build_20211215
qnap / qts = 4.2.6-build_20220304
qnap / qts = 4.2.6-build_20220623
qnap / qts = 4.2.6-build_20221028
qnap / multimedia_console = 2.1.0
qnap / multimedia_console = 2.1.1
qnap / multimedia_console = 1.4.3
qnap / multimedia_console = 1.4.4
qnap / multimedia_console = 1.4.5
qnap / multimedia_console = 1.4.6
qnap / multimedia_console = 1.4.7
qnap / media_streaming_add-on = 500.1.1.0
qnap / media_streaming_add-on = 500.1.1.1
qnap / media_streaming_add-on = 500.0.0.0
qnap / media_streaming_add-on = 500.0.0.1
qnap / media_streaming_add-on = 500.0.0.3
qnap / media_streaming_add-on = 500.0.0.4
qnap / media_streaming_add-on = 500.0.0.5
qnap / media_streaming_add-on = 500.0.0.6
qnap / media_streaming_add-on = 500.0.0.7
qnap / media_streaming_add-on = 500.0.0.8
qnap / media_streaming_add-on = 500.0.0.9
qnap / media_streaming_add-on = 500.0.0.10

Frequently Asked Questions

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.