Cyber Resilience

CVE-2017-6334

RCE in Netgear Dgn2200 Series Firmware ≤ 10.0.0.50

CISA KEVActive ExploitationEUVD ExploitedPublic PoCRCECommand Injection
Published
06 March 2017
Modified
21 April 2026
KEV Added
25 March 2022
CVSS Score v3.1 8.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.72 99.4th percentile
Risk Priority 90 floored blend · peak EPSS

Summary

CVE-2017-6334 is a high-severity OS Command Injection (CWE-78) vulnerability in Netgear Dgn2200 Series Firmware. Its CVSS base score is 8.8 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Command and Scripting Interpreter (T1059); ranked in the top 0.6% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog; a public proof-of-concept is referenced.

Deeper analysis AI-assisted summary

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

CVE-2017-6334 is an OS command injection vulnerability (CWE-78) affecting the dnslookup.cgi script on NETGEAR DGN2200 devices running firmware versions through 10.0.0.50. The flaw permits execution of arbitrary operating system commands when an authenticated user supplies shell metacharacters in the host_name field of an HTTP POST request; it is distinct from the related issue tracked as CVE-2017-6077. The vulnerability received a CVSS v3.1 base score of 8.8, reflecting network attack vector, low complexity, and low required privileges.

An attacker who has already obtained valid credentials on the affected device can send a crafted POST request to dnslookup.cgi and thereby execute commands with the privileges of the web server process. Successful exploitation grants full control over confidentiality, integrity, and availability of the router, enabling actions such as configuration changes, traffic interception, or persistence mechanisms.

Public exploit code for this issue has been published on Exploit-DB, confirming that working proof-of-concept attacks are readily available, although the supplied references contain no official vendor advisory or patch information.

OWASP Top 10 for Web (2025)

A05:2025 Injection

EU & UK References

Vulnerability Data

dnslookup.cgi on NETGEAR DGN2200 devices with firmware through 10.0.0.50 allows remote authenticated users to execute arbitrary OS commands via shell metacharacters in the host_name field of an HTTP POST request, a different vulnerability than CVE-2017-6077.

CWE(s)
CWE-78
KEV Date Added
25 March 2022

Related Threats

MITRE ATT&CK Enterprise Techniques

T1059 Command and Scripting Interpreter Execution
Adversaries may abuse command and script interpreters to execute commands, scripts, or binaries.
attack.mitre.org →
T1059.003 Windows Command Shell Execution
Adversaries may abuse the Windows command shell for execution.
attack.mitre.org →
T1059.004 Unix Shell Execution
Adversaries may abuse Unix shell commands and scripts for execution.
attack.mitre.org →
T1059.001 PowerShell Execution
Adversaries may abuse PowerShell commands and scripts for execution.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2017-6077Same vendor: Netgearboth on KEV
CVE-2023-40479Same vendor: Netgear
CVE-2024-52018Same vendor: Netgear
CVE-2021-27273Same vendor: Netgear
CVE-2024-52021Same vendor: Netgear
CVE-2024-52019Same vendor: Netgear
CVE-2024-51005Same vendor: Netgear
CVE-2023-27367Same vendor: Netgear
CVE-2024-52020Same vendor: Netgear
CVE-2023-27356Same vendor: Netgear

Affected Assets

netgear
dgn2200 series firmware
≤ 10.0.0.50

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
  • V15.2.5

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

SC-27 Platform-independent Applications
addresses: CWE-78

Platform-independent apps typically execute inside a managed runtime or sandbox that restricts direct OS command execution, reducing the ability to exploit OS command injection.

SI-10 Information Input Validation
addresses: CWE-78

Validates inputs to block special elements that would alter OS command execution.

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
prevents

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
prevents

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.8.29 Security testing in development and acceptance mostly match
finds

Security testing and code review target insecure use of operating-system command interfaces, catching command-injection flaws introduced during development.

References