CVE intelligence and bounded remediation

CVE-2023-32349 — Teltonika-Networks Rut200 Firmware security vulnerability

High CVSS 8.8

Version 00.07.03.4 and prior of Teltonika’s RUT router firmware contain a packet dump utility that contains proper validation for filter parameters. However, variables for validation checks are stored in an external configuration file. An authenticated attacker could use an exposed UCI configuration utility to change these variables and enable malicious parameters in the dump utility, which could result in arbitrary code execution.

Severity
High
CVSS
8.8 (3.1)
Published
2023-05-22
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-15

Affected products

  • teltonika-networks / rut200_firmware
  • teltonika-networks / rut240_firmware
  • teltonika-networks / rut241_firmware
  • teltonika-networks / rut300_firmware
  • teltonika-networks / rut360_firmware
  • teltonika-networks / rut901_firmware

Showing 6 representative product identities from 18 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

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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