External risk intelligence

Voltronic Power SNMP Web Pro Unauthenticated Remote Code Execution

CVE advisorySeverity: CRITICAL (CVSS 9.3)

CVE-2026-44402

The product is an SNMP web management interface designed for network-connected power management devices. These gateways are commonly deployed with their administrative web interfaces reachable over the network, and this specific vulnerability exists in a primary management endpoint that is exposed by design for configuration and firmware updates.

Unrestricted File Upload

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

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

This advisory addresses a critical vulnerability in Voltronic Power SNMP Web Pro software that could allow unauthorized remote attackers to execute arbitrary commands on affected systems. The issue stems from an unauthenticated flaw in the firmware update process, enabling attackers to upload malicious files and gain full control. The primary concern is confirming whether this technology is deployed and accessible within your network.

Attackers can run any command remotely.
It affects network-connected power management devices.
Confirm relevance and potential exposure.

Attack Path

How an attacker could exploit the issue

Attackers can reach and trigger this vulnerability by accessing the device's web interface over a network. Since no authentication is required, an attacker can directly interact with the vulnerable firmware update endpoint. By uploading a specially crafted archive, they can execute arbitrary commands with root privileges, leading to a full system compromise.

No authentication required to access endpoint.
Crafted tar archive uploaded to firmware update.
Full system compromise via arbitrary command execution.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability could allow an unauthenticated remote attacker to execute arbitrary commands as the root user on the affected system. This is possible by uploading a specially crafted tar archive through the firmware update endpoint, bypassing authentication. When successful, this could lead to a full system compromise.

System commands and configuration data at risk.
Unauthenticated upload of malicious archive.
Complete system compromise may occur.

Operational Fix

Recommended remediation, mitigation, and detection steps

The Voltronic Power SNMP Web Pro product, used for managing power infrastructure, is likely owned by infrastructure or platform teams responsible for network-attached devices. The critical first step is to identify all instances of this product, assess their network exposure and business criticality, and determine the accountable owner for remediation.

Infrastructure or platform teams own remediation.
Verify device network exposure and criticality.
Plan vendor coordination for firmware updates.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

Halo Threat Intelligence helps prioritize remediation with Halo Surface Signal and H/A/L/O context. Start exposure validation with a free external attack surface trial.

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Frequently asked questions

What is Voltronic Power SNMP Web Pro?

It is a network-based management interface for power infrastructure hardware. Devices running this software act as gateways, allowing administrators to monitor and manage uninterruptible power supplies (UPS) and other critical electrical equipment remotely over a network connection.

How does this CVE-2026-44402 vulnerability work?

This flaw belongs to the Unrestricted Upload of File with Dangerous Type class (CWE-434). It exists because the firmware update feature fails to verify the contents of uploaded files or the identity of the user. An attacker can upload a malicious archive that the system treats as a legitimate update, resulting in arbitrary commands running with root-level permissions.

Do I need to be logged in to trigger this bug?

No. The vulnerability exists in a way that bypasses all authentication checks. The system accepts requests directly at the firmware update endpoint without requiring a valid username or password, meaning any network-based actor can initiate the malicious upload process.

Is my device at risk based on Halo Surface Signal?

Halo Surface Signal indicates this risk is significant because these management interfaces are designed to be network-accessible for administrative tasks. If your instance is reachable over the network, it is exposed to this vulnerability, as the interface is inherently meant to handle configuration and updates from remote sources.

When should I take action to secure this technology?

Immediately. Start by identifying all instances of Voltronic Power SNMP Web Pro within your infrastructure. Once located, verify if they are reachable over your network, determine who is responsible for their maintenance, and coordinate with the vendor to obtain and apply the necessary firmware updates.

References

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.