CVE-2024-47133 Overview
CVE-2024-47133 is an OS command injection vulnerability [CWE-78] affecting I-O Data UD-LT1 and UD-LT1/EX router firmware. The flaw exists in firmware version Ver.2.1.9 and earlier on both device models. A remote authenticated attacker holding an administrative account can execute arbitrary operating system commands on the affected device. Successful exploitation compromises the confidentiality, integrity, and availability of the router and any traffic it processes.
Critical Impact
An authenticated administrator can execute arbitrary OS commands on affected UD-LT1 and UD-LT1/EX routers, enabling full device takeover and potential pivoting into internal networks.
Affected Products
- I-O Data UD-LT1 firmware Ver.2.1.9 and earlier
- I-O Data UD-LT1/EX firmware Ver.2.1.9 and earlier
Discovery Timeline
- 2024-12-05 - CVE-2024-47133 published to the National Vulnerability Database (NVD)
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2024-47133
Vulnerability Analysis
The vulnerability is classified as an Improper Neutralization of Special Elements used in an OS Command [CWE-78]. The management interface of the UD-LT1 and UD-LT1/EX devices accepts input from an authenticated administrator and passes it to an operating system shell without sufficient sanitization. An attacker who supplies shell metacharacters within the vulnerable parameter can break out of the intended command context and execute arbitrary commands with the privileges of the underlying management process.
Because the affected devices are LTE-capable routers, successful exploitation yields code execution on a network edge device. That position allows the attacker to intercept traffic, modify routing behavior, deploy persistence, and use the device as a pivot into the internal network.
Root Cause
The root cause is missing input neutralization on parameters that are concatenated into shell commands within the device's administrative interface. The firmware does not enforce a strict allowlist or escape shell metacharacters before invoking the system command.
Attack Vector
The attack is remote and network-based, but requires prior authentication with an administrative account. An attacker can obtain such credentials through credential reuse, phishing, default or weak passwords, or by chaining another vulnerability. User interaction is not required. Refer to the JVN Security Advisory JVN46615026 and I-O Data Support Information for vendor technical details.
No verified public proof-of-concept exploit code is available for this issue.
Detection Methods for CVE-2024-47133
Indicators of Compromise
- Unexpected outbound connections initiated from the UD-LT1 or UD-LT1/EX device to unknown external hosts.
- Administrative logins from unfamiliar source IP addresses or at unusual times.
- Configuration changes, new user accounts, or firmware modifications that were not authorized.
- Anomalous DNS queries or traffic patterns originating from the router's management plane.
Detection Strategies
- Review router administrative logs for command execution errors or unexpected shell output tied to configuration form submissions.
- Correlate authentication events on the device with the source IP reputation and geolocation of the administrator session.
- Inspect HTTP or HTTPS requests to the management interface for shell metacharacters such as ;, |, &, backticks, and $() in parameter values.
Monitoring Recommendations
- Forward router syslog and authentication events to a centralized log platform for retention and correlation.
- Alert on any administrative session originating from outside approved management networks.
- Baseline outbound traffic from the router and flag deviations, particularly to non-corporate destinations.
How to Mitigate CVE-2024-47133
Immediate Actions Required
- Upgrade UD-LT1 and UD-LT1/EX firmware to the version released after Ver.2.1.9 as directed by the I-O Data Support Information advisory.
- Rotate all administrative credentials on affected devices and enforce strong, unique passwords.
- Restrict access to the router management interface to trusted management networks only.
- Audit administrative accounts and remove any that are unused or unrecognized.
Patch Information
I-O Data has published remediation guidance in its support bulletin. Consult the I-O Data Support Information page and the JVN Security Advisory JVN46615026 for the fixed firmware version and installation procedure.
Workarounds
- Disable remote administrative access from WAN interfaces if firmware updates cannot be applied immediately.
- Place the device behind a firewall that restricts management-plane access to a dedicated jump host.
- Enforce multi-factor authentication on any upstream systems that store or handle router administrative credentials.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
