CVE intelligence and bounded remediation

CVE-2024-30220 — Planex Mzk-Mf300N Firmware security vulnerability

High CVSS 8.8

Command injection vulnerability in PLANEX COMMUNICATIONS wireless LAN routers allows a network-adjacent unauthenticated attacker to execute an arbitrary command by sending a specially crafted request to a certain port. Note that MZK-MF300N is no longer supported, therefore the update for this product is not provided.

Severity
High
CVSS
8.8 (3.1)
Published
2024-04-15
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-77

Affected products

  • planex / mzk-mf300n_firmware
  • planex / mzk-mf300hp2_firmware

Matched remediation archetype

Command, code, expression, and template injection

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

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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