External risk intelligence

rConfig Remote Code Execution via Untrusted Data Deserialization

CVE advisorySeverity: CRITICAL (CVSS 9.3)

CVE-2026-124079

rConfig is a network device management application typically deployed as a centralized, internet-facing or edge-reachable web portal used for configuration management. While the Redis component may be internal, the application itself is designed to interface with network infrastructure and is commonly deployed in environments where web access to the management console is required.

Deserialization

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

A vulnerability exists in rConfig Core and Pro related to how it handles data in its job queue, allowing unauthenticated attackers to execute arbitrary code. This could potentially enable unauthorized access to sensitive information, such as database credentials and API tokens, or the deployment of malicious web shells.

Attackers can run any code on affected systems.
Critical data could be exposed or systems compromised.
Confirm relevance and assess potential exposure.

Attack Path

How an attacker could exploit the issue

Attackers can exploit this vulnerability by sending a specially crafted serialized job to the Redis queue, which is accessible over the network without authentication. This crafted job causes the application to deserialize untrusted data, allowing the attacker to execute arbitrary code on the server. The attacker can then use this access to download sensitive information, such as database credentials and API tokens, or to establish a persistent web shell.

Unauthenticated network access to Redis queue
Deserialization of untrusted job data
Arbitrary code execution and data theft

Live Threat

Current exploitation, exposure, and threat context

Unauthenticated network attackers could execute arbitrary code on affected systems by sending a crafted serialized job to the Redis-backed Laravel Horizon queue. This could allow attackers to access sensitive information such as database and stored device credentials, as well as API tokens, and potentially deploy a web shell.

Device credentials and API tokens at risk.
Arbitrary code execution via crafted queue jobs.
Persistent access and sensitive data compromise.

Operational Fix

Recommended remediation, mitigation, and detection steps

The presence of this vulnerability in rConfig Core and Pro suggests that infrastructure or platform teams responsible for managing network device configurations should lead the response, in coordination with security teams. The initial practical step is to locate all instances of rConfig, assess their network exposure and criticality, and identify the accountable system owner to prioritize remediation efforts.

Assign ownership to infrastructure or platform teams.
Verify Redis accessibility and rConfig deployment scope.
Plan remediation based on exposure and business impact.

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 rConfig and how is it used?

rConfig is a network device management application designed to automate the backup, configuration, and monitoring of network infrastructure. Organizations deploy it as a centralized dashboard to track changes and manage device settings across their IT environment, often relying on backend tools like Redis to coordinate background tasks and queue system processes.

What does deserialization of untrusted data mean for CVE-2026-124079?

This vulnerability is a 'Deserialization of Untrusted Data' (CWE-502). In simple terms, the application takes complex data received from a user and reconstructs it into a programming object without verifying its safety. Because the system trusts this input, an attacker can craft a specific data package that tricks the application into performing unintended actions, such as executing unauthorized commands on the underlying server.

How does an attacker trigger this vulnerability?

An attacker triggers the bug by sending a maliciously crafted job to the Redis-backed queue used by the software. The vulnerability relies on the queue worker processing this data without restrictions. It is important to note that this does not require valid login credentials; however, it generally requires network reachability to the Redis service or, in some cases, the ability to interact with the application’s device-targeting features.

Is my rConfig instance at risk according to Halo Surface Signal?

Halo Surface Signal identifies that because rConfig is typically deployed as an internet-facing or edge-reachable web portal to manage network infrastructure, it often resides in high-visibility network segments. If your instance is accessible from the internet or sits in a location where network traffic can reach the management console, it is considered higher risk.

What should I do first to address this threat?

Begin by identifying every instance of rConfig in your environment and confirming which versions are running. Once you have an inventory, coordinate with your infrastructure or platform teams to prioritize these systems based on their network exposure. Your primary goal is to ensure you are ready to apply updates provided by the vendor, as this is the standard path to remediate the underlying flaw.

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.