CVE intelligence and bounded remediation

CVE-2019-19356 — Netis WF2419 Devices Remote Code Execution Vulnerability

High CVSS 8.5 CISA KEV

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

Severity
High
CVSS
8.5 (2.0)
Published
2020-02-07
CISA KEV
Known exploited
Ecosystem
operating-system
Weaknesses
CWE-78

Affected products

  • netis-systems / wf2419_firmware / 1.2.31805
  • netis-systems / wf2419_firmware / 2.2.36123

Matched remediation archetype

Command, code, expression, and template injection

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Check exposure

  • Trace untrusted values to process execution, interpreters, evaluators, template engines, dynamic imports, and administrative scripting features.
  • Determine whether the affected path is reachable across each trust boundary and which service account or host privilege it inherits.
  • Review configuration for optional execution features, unsafe compatibility modes, and shell invocation.

Remediate safely

  • Replace string-built commands or evaluated code with fixed operations and structured argument APIs that do not invoke a shell.
  • Use strict allowlists for operation identifiers and reject unexpected input before it reaches any interpreter.
  • Update the affected component and add inert regression tests covering metacharacters, encoding variants, and alternate request paths.

Authoritative sources

Complete CVE record and remediation plan

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