CVE intelligence and bounded remediation

CVE-2024-45698 — Dlink Dir-X4860 Firmware security vulnerability

Critical CVSS 9.8

Certain models of D-Link wireless routers do not properly validate user input in the telnet service, allowing unauthenticated remote attackers to use hard-coded credentials to log into telnet and inject arbitrary OS commands, which can then be executed on the device.

Severity
Critical
CVSS
9.8 (3.1)
Published
2024-09-16
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-78, CWE-798

Affected products

  • dlink / dir-x4860_firmware / 1.00
  • dlink / dir-x4860_firmware / 1.04

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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