Security Resilience

CVE-2023-47218

Command Injection in Qnap Qts 5.1.0 – 5.1.5.2645

Public PoCHigh EPSSCommand Injection
Published
13 February 2024
Modified
10 December 2025
Patch / advisory
View advisory
CVSS Score v3.1 5.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L
EPSS Score 0.90 99.8th percentile
Risk Priority 70 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2023-47218 is a medium-severity Command Injection (CWE-77) vulnerability in Qnap Qts. Its CVSS base score is 5.8 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique NTDS (T1003.003); ranked in the top 0.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified map to SA-11 (Developer Testing and Evaluation) and SI-10 (Information Input Validation) — see the control section below for these in your framework.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

An OS command injection vulnerability, tracked as CVE-2023-47218 and assigned CWE-77/CWE-78, affects multiple versions of QNAP QTS, QuTS hero, and QuTScloud operating systems. The flaw permits unauthenticated remote command execution over the network and carries a CVSS 3.1 score of 5.8 reflecting adjacent-network access, high attack complexity, and limited impacts with changed scope.

An attacker positioned on an adjacent network can exploit the issue without credentials or user interaction to run arbitrary operating-system commands on the affected NAS device. Successful exploitation could lead to limited confidentiality, integrity, and availability impacts that extend beyond the vulnerable component.

QNAP has addressed the vulnerability in QTS 5.1.5.2645 build 20240116 and later, QuTS hero h5.1.5.2647 build 20240118 and later, and QuTScloud c5.1.5.2651 and later; the vendor advisory QSA-23-57 recommends applying these updates. The associated EPSS score currently stands at 0.9315 with a recorded peak of 0.9329.

OWASP Top 10 for Web (2025)

A05:2025 Injection

EU & UK References

Vulnerability Data

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: QTS 5.1.5.2645…

more

build 20240116 and later QuTS hero h5.1.5.2647 build 20240118 and later QuTScloud c5.1.5.2651 and later

CWE(s)
CWE-77CWE-78

Related Threats

MITRE ATT&CK Enterprise Techniques

T1003.003 NTDS Credential Access
Adversaries may attempt to access or create a copy of the Active Directory domain database in order to steal credential information, as well as obtain other information about domain members such as devices, users, and access rights.
attack.mitre.org →
T1007 System Service Discovery Discovery
Adversaries may try to gather information about registered local system services.
attack.mitre.org →
T1010 Application Window Discovery Discovery
Adversaries may attempt to get a listing of open application windows.
attack.mitre.org →
T1021.004 SSH Lateral Movement
Adversaries may use [Valid Accounts](https://attack.
attack.mitre.org →
T1021.008 Direct Cloud VM Connections Lateral Movement
Adversaries may leverage [Valid Accounts](https://attack.
attack.mitre.org →
T1027.001 Binary Padding Stealth
Adversaries may use binary padding to add junk data and change the on-disk representation of malware.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-41282Same product: Qnap Qts
CVE-2023-41283Same product: Qnap Qts
CVE-2023-41281Same product: Qnap Qts
CVE-2024-32766Same product: Qnap Qts
CVE-2023-45025Same product: Qnap Qts
CVE-2023-50358Same product: Qnap Qts
CVE-2023-39302Same product: Qnap Qts
CVE-2023-47567Same product: Qnap Qts
CVE-2023-39297Same product: Qnap Qts
CVE-2023-23368Same product: Qnap Qts

Affected Assets

qnap
qts
5.1.5.2645 · 5.1.0 — 5.1.5.2645
qnap
quts hero
h5.1.5.2647 · h5.1.0 — h5.1.5.2647
qnap
qutscloud
c5.0.0.1919 — c5.1.5.2651

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V1.2.5
  • V1.2.8

Mitigating Controls (NIST 800-53 r5) AI

SA-11 Developer Testing and Evaluation good match

Developer testing and evaluation can discover command-construction flaws before deployment.

SI-10 Information Input Validation good match

Input validation directly stops construction of commands from untrusted data containing special elements.

AC-6 Least Privilege partial match

Least privilege reduces the permissions available to any process that could be subverted by injected commands.

CM-7 Least Functionality partial match

Least functionality restricts available OS commands and interpreters, limiting the blast radius of injection.

SA-8 Security and Privacy Engineering Principles partial match

Secure engineering principles include proper neutralization and safe command construction practices.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
blocks

PR.PS-06's SDLC practices directly require secure coding and input handling that blocks command-injection defects, yet the single broad outcome leaves many specific neutralization vectors and verification gaps unaddressed.

PR.PS-02 partial match
blocks

Routine patching/maintenance can remediate known command-injection CVEs in dependencies (partial forward) but does nothing to stop developers from introducing improper neutralization in custom code (none reverse).

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.5.14 Information transfer partial match
removes
A.5.15 Access control partial match
removes
A.5.16 Identity management partial match
removes
A.5.17 Authentication information partial match
removes
A.5.18 Access rights partial match
removes
A.8.10 Information deletion partial match
removes

Hardening callouts derived

DISA STIG baselines are authored against specific weaknesses. Where this CVE cites a broad weakness class, the mapping is not asserted at that abstraction (owner ruling, 2026-09-25: grade only at Base and below), so no rule is shown here rather than a rule shown against the wrong grain.

  • No fine-grained STIG row for CWE-77, a class-level weakness, and none of its children carries one either.

References