CVE intelligence and bounded remediation

CVE-2023-31756 — Tp-Link Archer Vr1600V Firmware security vulnerability

Medium CVSS 6.7

A command injection vulnerability exists in the administrative web portal in TP-Link Archer VR1600V devices running firmware Versions <= 0.1.0. 0.9.1 v5006.0 Build 220518 Rel.32480n which allows remote attackers, authenticated to the administrative web portal as an administrator user to open an operating system level shell via the 'X_TP_IfName' parameter.

Severity
Medium
CVSS
6.7 (3.1)
Published
2023-05-19
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-78

Affected products

  • tp-link / archer_vr1600v_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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