External risk intelligence

TOTOLINK X6000R Firmware Command Execution

CVE advisorySeverity: CRITICAL (CVSS 9.8)

CVE-2024-52723

This vulnerability affects a router firmware and involves the device's web server interface. Routers are commonly deployed at the network edge, and their web management interfaces are frequently accessible or unintentionally exposed to the internet, making this a likely public-facing attack surface in many real-world deployments.

OS Command Injection

Totolink X6000r Firmware

9.4.0cu.1041_b20240224

Halo Surface Signal: 4 out of 5 — likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

This critical vulnerability involves a flaw in certain TOTOLINK router firmware, where an oversight in handling user input could allow an unauthenticated attacker to execute arbitrary commands remotely. The primary concern is confirming if this specific technology is in use and its potential exposure.

Flaw allows remote command execution on routers.
Critical remote code execution risk; confirms relevance.
Assess exposure of TOTOLINK X6000R router firmware.

Attack Path

How an attacker could exploit the issue

An attacker can exploit this vulnerability by sending a specially crafted request to the device's web interface. The vulnerable `shttpd` component, specifically the `Uci_Set Str` function, fails to adequately validate user-supplied input, allowing an attacker to inject commands. Successful exploitation could enable an attacker to execute arbitrary commands on the affected device, leading to a compromise.

No authentication or user interaction needed.
Input to `Uci_Set Str` function.
Complete device compromise possible.

Live Threat

Current exploitation, exposure, and threat context

An attacker could execute arbitrary commands on the affected device by exploiting a lack of strict parameter filtering in the shttpd file's Uci_Set Str function. This could impact the device's overall behavior and potentially expose system data.

System commands and configuration.
Via network requests to the device.
Device control and data compromise.

Operational Fix

Recommended remediation, mitigation, and detection steps

Infrastructure or platform teams responsible for network devices are likely to own this issue, as it affects router firmware. The first practical step is to identify all instances of the affected router, assess their exposure and business criticality, and then determine the accountable owner for remediation planning.

Infrastructure or platform teams own remediation.
Verify device exposure and criticality first.
Coordinate vendor updates and plan maintenance.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

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Frequently asked questions

What is the TOTOLINK X6000R?

The TOTOLINK X6000R is a wireless router used to manage network traffic and provide internet connectivity. It relies on firmware—the internal software controlling its hardware functions—to handle routing, security, and administrative tasks. This specific vulnerability resides within the router's web-based management interface, which is the portal users access to configure their device settings.

What does CWE-78 mean for CVE-2024-52723?

CVE-2024-52723 involves a vulnerability classified as CWE-78, or OS Command Injection. This happens when a program takes user-provided input and passes it to a system shell without cleaning it first. In this router, the web server fails to filter input sent to a specific internal function, allowing an attacker to insert their own operating system commands that the device then executes with elevated privileges.

How does an attacker trigger this command injection?

An attacker triggers this by sending a specially crafted network request to the router's web interface, targeting the shttpd component. The vulnerability is specific to how the device's Uci_Set Str function processes incoming parameters. Simply visiting the login page or using the router for normal internet browsing does not trigger the bug; the attacker must intentionally submit malicious input designed to interact with that specific internal function.

Why is this vulnerability a concern for my network?

According to Halo Surface Signal, this issue is a significant concern because the affected component is part of the router's management interface. Since routers are typically deployed at the network edge, these interfaces are often inadvertently exposed to the internet. If your device's administrative web portal is reachable from outside your local network, it increases the risk that an attacker could attempt to compromise the device remotely.

What steps should I take if I use this router?

Your first step is to create an inventory of all TOTOLINK X6000R devices in your environment to determine if they are running the affected firmware version. Once identified, evaluate if those devices have their management interfaces exposed to the public internet and restrict access to internal networks only. Finally, contact the vendor to check for official firmware updates or guidance on securing the device against this command injection flaw.

References

gist.github.com/M4rg4tr01d/e84f8ed8dc27960d7c56ad289f6fb0ff

Written by Nicholas Merritt

Nicholas Merritt is VP of Security Solutions at Halo Security. With more than 25 years across application security, vulnerability prioritization, and offensive security, he helps teams translate threat data into practical exposure validation and remediation focus. He authors Halo Threat Intelligence CVE advisories using Halo Surface Signal and H/A/L/O context to prioritize internet-facing risk.