External risk intelligence

DedeCMS V5.7.118 Command Execution in file_manage_control.php

CVE advisorySeverity: CRITICAL (CVSS 9.8)

CVE-2026-38615

DedeCMS is a content management system designed to be deployed as a public-facing web application. The vulnerability exists in a file management component that is often accessible within the application's administrative or functional interface, which is commonly exposed to the internet in standard web deployments.

OS Command Injection

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 critical vulnerability has been identified in DedeCMS software, specifically in a file management component that could allow for unauthorized command execution. While the exact business impact depends on whether your organization uses this specific software, such flaws can enable attackers to take control of systems, potentially leading to data breaches or service disruptions. It is important to determine if this technology is in use and assess exposure.

Allows unauthorized control of systems.
Could impact public-facing web applications.
Confirm if this software is in use.

Attack Path

How an attacker could exploit the issue

An attacker could target a DedeCMS instance through the network, exploiting a weakness in its file management feature. This could allow them to execute arbitrary commands on the server, potentially leading to a complete compromise of the system.

Accessible via the network.
Triggers via file management feature.
Risk of full system compromise.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability in DedeCMS could allow an unauthenticated attacker to execute arbitrary commands on the server when a file management feature is accessible. This could affect the integrity and availability of the DedeCMS application and potentially the underlying server.

Server-side commands could be executed.
Network access to vulnerable function.
System compromise and data loss.

Operational Fix

Recommended remediation, mitigation, and detection steps

This critical vulnerability in DedeCMS's file management component requires immediate attention from teams managing web applications and their underlying infrastructure. The first step is to identify all DedeCMS installations, determine their exposure and criticality, and assign ownership to an accountable team for risk-based remediation planning.

Application owners should confirm installations.
Verify internet reachability and business impact.
Plan remediation based on identified risk.

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 DedeCMS and how is it used?

DedeCMS is a PHP-based content management system used to build and maintain websites. It provides tools for creating, editing, and managing digital content, including features for file management and administrative control over the site's server environment.

What does CVE-2026-38615 mean for my security?

This vulnerability is classified as CWE-78, or OS Command Injection. It occurs when an application fails to properly filter user input before passing it to the underlying operating system. In this case, it allows an attacker to run unauthorized commands on your server, effectively gaining control over the system's functions and data.

How is this DedeCMS command execution triggered?

The flaw is triggered when an attacker interacts with the specific file_manage_control.php file over the network. It does not require the attacker to have a pre-existing account or administrative privileges to initiate the command; simply reaching the functional interface of this file is sufficient.

Is my instance at risk according to Halo Surface Signal?

Because DedeCMS is typically deployed as a public-facing web application, Halo Surface Signal flags this as a highly relevant risk. If your installation is reachable via the internet, it is exposed to external actors, making it a priority to investigate regardless of whether it is an internal tool or a public site.

How do I respond to this vulnerability?

Start by locating every DedeCMS installation within your environment to understand your footprint. Once identified, evaluate whether the application needs to remain internet-facing and work with the responsible teams to prioritize security updates or restrict network access to the affected file management interface until a permanent solution is applied.

References

github.com/Bul11et/CMS/blob/main/1.docx

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.