External risk intelligence

Waterfall WF-500 Command Injection Vulnerability.

CVE advisorySeverity: CRITICAL (CVSS 9.3)

CVE-2025-41274

The vulnerability exists in the Console WebUI of an industrial network security appliance. Such devices are frequently deployed as edge gateways or management interfaces where web-based management consoles are reachable over the network to facilitate administration and monitoring, making remote access to this interface a common deployment pattern.

OS Command Injection

Waterfall Security Wf 500 Firmware

7.9.1.0_r2502171040 and earlier

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 advisory details a critical security vulnerability in Waterfall's WF-500 devices that could allow unauthorized remote attackers to execute commands on the system. The issue lies within the Console WebUI and impacts the operating system. The primary concern is to confirm if these devices are within our environment and assess potential exposure.

Attackers can run commands on affected devices.
Leadership should remember this impacts network security appliances.
Confirm relevance and potential exposure in our environment.

Attack Path

How an attacker could exploit the issue

An attacker can exploit this vulnerability by sending specially crafted requests to the Console WebUI of the affected device. This could lead to the execution of arbitrary operating system commands, potentially allowing the attacker to gain control of the device.

No authentication required for attack.
Triggered via a web interface.
Risks full system compromise.

Live Threat

Current exploitation, exposure, and threat context

Remote, unauthenticated attackers could execute arbitrary operating system commands on Waterfall WF-500 TX and RX Hosts when supported by the advisory. This could allow for unauthorized actions on the affected devices.

Network-accessible device commands are at risk.
Unauthenticated remote command execution may occur.
Device compromise and unauthorized access are possible.

Operational Fix

Recommended remediation, mitigation, and detection steps

The Waterfall security product's Console WebUI is susceptible to OS command injection, allowing unauthenticated remote attackers to execute arbitrary commands. Given the nature of industrial network appliances, these consoles are often network-reachable, making proactive identification and risk assessment critical. The first step involves locating all instances of the affected technology, determining their network exposure and business criticality, and then assigning an accountable owner to plan remediation.

Waterfall Security and asset owners.
Confirm Console WebUI network exposure.
Plan remediation based on criticality.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

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Frequently asked questions

What is the Waterfall WF-500?

The Waterfall WF-500 is an industrial network security appliance used to manage data flow and security across sensitive environments. The TX and RX hosts are specialized hardware components designed for high-assurance network connectivity. They act as gateways to facilitate secure communication, often relying on a Console WebUI for administrative tasks, system monitoring, and device configuration.

How does CVE-2025-41274 allow OS command injection?

This vulnerability is classified as CWE-78: Improper Neutralization of Special Elements used in an OS Command. In plain terms, the Console WebUI fails to properly sanitize user input before passing it to the underlying operating system. Because of this flaw, an attacker can input malicious commands that the device mistakenly treats as legitimate system instructions, leading to unauthorized code execution.

What triggers this vulnerability in the WF-500?

The flaw is triggered when an attacker sends a specially crafted request to the Console WebUI. Importantly, this requires no authentication, meaning a remote attacker does not need a valid username or password to initiate the exploit. The vulnerability is tied to the web interface's handling of requests; it is not triggered by standard, non-malicious interaction with the system.

How do I know if my Waterfall devices are at risk?

Halo Surface Signal indicates this vulnerability is likely relevant because these devices often feature management interfaces reachable over the network. If your WF-500 Console WebUI is accessible from your broader network—rather than being strictly segmented or isolated—the potential for remote exploitation increases. You should check your network architecture to determine if the management console is exposed to unauthorized users.

What are the first steps to address CVE-2025-41274?

Start by identifying all deployed instances of the affected WF-500 hardware within your organization. Once located, verify the network reachability of their Console WebUI interfaces. Determine the business criticality of each unit and assign an accountable owner to manage the risk. Ensure you are tracking the status of these devices and preparing to apply vendor-supplied updates as soon as they are made available.

References

www.nozominetworks.com/labs/vulnerability-advisories-cve-2025-41274

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.