External risk intelligence

PROCON-WEB SCADA SQL Injection Vulnerability.

CVE advisorySeverity: CRITICAL (CVSS 9.3)

CVE-2026-16462

PROCON-WEB is a SCADA/HMI solution typically used in industrial or internal operational technology environments. While the vulnerability exists in a network-reachable endpoint, these systems are generally deployed within segmented or isolated networks rather than exposed directly to the public internet.

SQL Injection

Halo Surface Signal: 3 out of 5 — possibly public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

This vulnerability in PROCON-WEB SCADA involves an improperly handled data input, potentially allowing unauthorized remote access to execute malicious SQL commands. The primary concern for leadership is to determine if PROCON-WEB SCADA is in use within the organization and, if so, to understand the potential exposure, as these systems are often critical to operational technology environments.

Unchecked input allows remote SQL command execution.
Verify if operational technology systems are affected.
Confirm relevance and understand potential exposure.

Attack Path

How an attacker could exploit the issue

A remote attacker can exploit this vulnerability by sending a crafted request to the 'GetGridData' endpoint. This endpoint does not properly validate incoming data, allowing the attacker to inject malicious SQL commands. Successful exploitation could enable the attacker to execute arbitrary SQL, potentially leading to unauthorized data access or modification.

No authentication required.
Triggered via a network request.
Leads to arbitrary SQL execution.

Live Threat

Current exploitation, exposure, and threat context

The PROCON-WEB SCADA system's 'GetGridData' endpoint, when not properly sanitized, could allow an unauthenticated remote attacker to execute arbitrary SQL commands. This could potentially lead to unauthorized access and manipulation of system data.

System data may be exposed.
Attacker exploits unsanitized input.
Unauthorized data access and modification.

Operational Fix

Recommended remediation, mitigation, and detection steps

Real-world ownership of this vulnerability likely falls to the teams managing the SCADA systems, potentially including operational technology (OT) infrastructure teams or specialized SCADA administrators, given the nature of PROCON-WEB. The first critical step is to pinpoint all instances of PROCON-WEB within the environment, assess their network exposure, and determine their business criticality. This will enable the identification of the accountable owner and facilitate a risk-based remediation plan.

SCADA or OT infrastructure owners.
Confirm network reachability and business criticality.
Plan remediation based on assessed risk.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

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Frequently asked questions

What is PROCON-WEB SCADA?

PROCON-WEB is a software platform used for Supervisory Control and Data Acquisition (SCADA) and Human-Machine Interface (HMI) applications. It serves as a bridge between operators and industrial machinery, enabling the visualization, monitoring, and control of complex physical processes. It is typically deployed within industrial or operational technology (OT) environments to manage automated systems, rather than for general-purpose office or business tasks.

What does SQL injection mean for CVE-2026-16462?

This vulnerability is classified as CWE-89 (Improper Neutralization of Special Elements used in an SQL Command). In plain terms, the software fails to clean or validate input sent to the 'GetGridData' endpoint. Because this input is treated as a trusted command, an attacker can insert their own database instructions. This allows them to interact with the underlying database in ways the software designers did not intend, potentially bypassing security controls.

How is this vulnerability triggered?

An attacker triggers this bug by sending a specially crafted network request to the 'GetGridData' endpoint in PROCON-WEB. Crucially, the attacker does not need to provide any login credentials or be an authorized user to initiate the request. The vulnerability is not triggered by standard, legitimate interactions with the user interface, but rather by deliberate, malicious inputs designed to bypass the application's intended data handling logic.

Is my organization at risk from this CVE?

According to Halo Surface Signal, the risk level is considered 'Possible' because PROCON-WEB systems are usually hidden inside segmented or isolated OT networks. While the vulnerability is technically reachable over a network, the actual danger depends on whether your specific instance is exposed to the public internet or is accessible from a broader corporate network that an attacker might reach.

What should I do if we use PROCON-WEB?

Your first step is to locate all instances of PROCON-WEB within your infrastructure and identify the teams responsible for their maintenance. Once identified, evaluate the network accessibility of these systems to see if they are reachable from unauthorized segments. Coordinate with your SCADA or OT administrators to review the asset's business criticality and establish a remediation plan to mitigate the threat.

References

www.certvde.com/en/advisories/VDE-2026-085/

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.