CVE intelligence and bounded remediation

CVE-2024-12847 — NETGEAR DGN1000 before 1.1.00.48 is vulnerable to an authentication bypass vulnerability

Critical CVSS 9.8

NETGEAR DGN1000 before 1.1.00.48 is vulnerable to an authentication bypass vulnerability. A remote and unauthenticated attacker can execute arbitrary operating system commands as root by sending crafted HTTP requests to the setup.cgi endpoint. This vulnerability has been observed to be exploited in the wild since at least 2017 and specifically by the Shadowserver Foundation on 2025-02-06 UTC.

Severity
Critical
CVSS
9.8 (3.1)
Published
2025-01-10
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-78, CWE-306

Affected products

  • netgear / dgn1000_firmware

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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