CVE-2021-32974CWE-20

Moxa NPort IAW5000A-I/O Series Serial Device Server Improper Input Validation

Critical · published April 1, 2022

CVSS v3.1
9.8
EPSS
3%
Percentile
85.8
In the wild
Unconfirmed
What it is

🚨 A tiny oversight in the Moxa NPort IAW5000A-I/O series could hand over command execution to an attacker. 🔥 Think of this vulnerability as a poorly designed restaurant menu that lets a customer order anything from the kitchen without checking their identity — no chef would want that chaos! An attacker could exploit this flaw to execute arbitrary commands on the device, potentially leading to a complete takeover of the system. This could allow for unauthorized access to sensitive data and manipulation of critical infrastructure, which is absolutely devastating!

Put simply

Think of this vulnerability as a poorly designed restaurant menu that lets a customer order anything from the kitchen without checking their identity — no chef would want that chaos! This vulnerability arises from improper input validation in the built-in web server of Moxa NPort IAW5000A-I/O series firmware versions 2.2 or earlier, allowing remote attackers to send malicious commands that the system will execute without proper checks.

What to do

An attacker could exploit this flaw to execute arbitrary commands on the device, potentially leading to a complete takeover of the system. This could allow for unauthorized access to sensitive data and manipulation of critical infrastructure, which is absolutely devastating! To protect your devices, immediately update the firmware to the latest version. Ensure that any device utilizing this software is properly secured with firewall rules and access controls to mitigate potential attacks. You've got this! Implement these steps and you'll bolster your defenses in no time! 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.02697 · 85.8th percentile
Weakness
CWE-20 · Improper Input Validation
Published
2022-04-01T22:17Z
EPSS history
Timeline
  • 01 APR 22:17Z
    Moxa NPort IAW5000A-I/O Series Serial Device Server Improper Input Validation
    cvelistv5