Cyber Resilience

CVE-2019-19356

RCE in Netis-Systems Wf2419 Firmware 1.2.31805 … 2.2.36123

CISA KEVActive ExploitationEUVD ExploitedPublic PoCRCECommand Injection
Published
07 February 2020
Modified
07 November 2025
KEV Added
03 November 2021
CVSS Score v3.1 7.5
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.28 98th percentile
Risk Priority 82 floored blend · peak EPSS

Summary

CVE-2019-19356 is a high-severity OS Command Injection (CWE-78) vulnerability in Netis-Systems Wf2419 Firmware. Its CVSS base score is 7.5 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Command and Scripting Interpreter (T1059); ranked in the top 2% 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.

Netis WF2419 routers running firmware versions V1.2.31805 and V2.2.36123 contain an authenticated remote code execution vulnerability in the web management interface. The flaw, tracked as CVE-2019-19356 and assigned CWE-78, stems from missing sanitization of user input passed to the tracert diagnostic tool, allowing system commands to be executed with root privileges. The issue carries a CVSS 3.1 score of 7.5 reflecting network attack vector, high attack complexity, and low privileges required.

An attacker who has obtained valid credentials for the router's administrative web page can submit crafted input through the tracert function to run arbitrary commands as root. Successful exploitation grants full control of the device, including the ability to modify configuration, intercept traffic, or pivot to other systems on the local network.

Public proof-of-concept code and technical write-ups are available that demonstrate the attack against the affected firmware versions, though no vendor advisory or patch information is referenced in the available sources.

OWASP Top 10 for Web (2025)

A05:2025 Injection

EU & UK References

Vulnerability Data

Netis WF2419 is vulnerable to authenticated Remote Code Execution (RCE) as root through the router Web management page. The vulnerability has been found in firmware version V1.2.31805 and V2.2.36123. After one is connected to this page, it is possible to…

more

execute system commands as root through the tracert diagnostic tool because of lack of user input sanitizing.

CWE(s)
CWE-78
KEV Date Added
03 November 2021

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-2023-43890Same vendor: Netis-Systems
CVE-2024-33793Same vendor: Netis-Systems
CVE-2024-25851Same vendor: Netis-Systems
CVE-2021-26747Same vendor: Netis-Systems
CVE-2023-45467Same vendor: Netis-Systems
CVE-2023-43892Same vendor: Netis-Systems
CVE-2023-43893Same vendor: Netis-Systems
CVE-2023-39780Shared CWE-78both on KEV
CVE-2021-20035Shared CWE-78both on KEV
CVE-2026-39808Shared CWE-78both on KEV

Affected Assets

netis-systems
wf2419 firmware
1.2.31805, 2.2.36123

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