CVE-2026-25201: Samsung MagicInfo 9 Server RCE Vulnerability

CVE-2026-25201 Overview

CVE-2026-25201 is an unauthenticated arbitrary file upload vulnerability in Samsung MagicINFO 9 Server. Attackers can upload malicious files without authentication and execute remote code on the server. Successful exploitation leads to privilege escalation and full compromise of the digital signage management platform.

The flaw affects all MagicINFO 9 Server versions prior to 21.1090.1. Samsung MagicINFO is widely deployed across retail, transportation, and corporate environments to manage digital signage displays. The vulnerability is classified under CWE-434: Unrestricted Upload of File with Dangerous Type.

Critical Impact
An unauthenticated network attacker can upload arbitrary files and achieve remote code execution, resulting in privilege escalation and full server takeover.

Affected Products

Samsung MagicINFO 9 Server versions prior to 21.1090.1
Digital signage deployments using affected MagicINFO 9 Server builds
Centralized content management systems built on Samsung MagicINFO 9

Discovery Timeline

2026-02-02 - CVE-2026-25201 published to NVD
2026-03-10 - Last updated in NVD database

Technical Details for CVE-2026-25201

Vulnerability Analysis

The vulnerability stems from improper validation of file uploads in the MagicINFO 9 Server. The server accepts file uploads from unauthenticated network sources without enforcing file type, extension, or content restrictions. Attackers can place server-side executable content into a location reachable by the application runtime.

Once the uploaded payload is invoked, it executes in the security context of the MagicINFO service. This grants the attacker code execution on the host and a path to privilege escalation. The combination of network attack vector, no authentication, and low attack complexity makes mass scanning and opportunistic exploitation realistic.

MagicINFO 9 Server typically runs with elevated service privileges to manage signage clients, content distribution, and scheduling. Code executed through this vector inherits those permissions and can pivot to internal management interfaces.

Root Cause

The root cause is unrestricted file upload functionality that fails to validate file type, extension, MIME content, and storage location. Missing authentication on the upload endpoint compounds the issue by removing any pre-conditions for an attacker. This pattern aligns with CWE-434.

Attack Vector

Exploitation requires network access to the MagicINFO 9 Server management interface, typically over HTTP or HTTPS. The attacker submits a crafted upload request containing a payload such as a JSP, ASPX, or other server-executable file. The attacker then issues a follow-up request to the uploaded resource to trigger execution. No valid credentials, prior session, or user interaction with a privileged victim is required to plant the file. See the Samsung TV Security Updates advisory for vendor-confirmed details.

Detection Methods for CVE-2026-25201

Indicators of Compromise

Unexpected files with executable extensions such as .jsp, .jspx, .war, or .aspx inside MagicINFO web application directories
Outbound connections from the MagicINFO server process to unknown IP addresses or rare geolocations
Child processes spawned by the MagicINFO application server such as cmd.exe, powershell.exe, or /bin/sh
New local accounts, scheduled tasks, or services created on the MagicINFO host shortly after an upload event

Detection Strategies

Inspect web server access logs for POST requests to upload endpoints followed by GET requests to newly created file paths
Monitor file integrity on MagicINFO web roots and content directories for unauthorized writes
Correlate process lineage where the MagicINFO Java or web service process spawns shell or scripting interpreters
Alert on outbound connections initiated by the MagicINFO service to non-corporate destinations

Monitoring Recommendations

Forward MagicINFO web access logs, application logs, and host EDR telemetry to a centralized analytics platform
Baseline normal upload activity by source IP, file type, and size to flag deviations
Track authentication state on upload endpoints and alert on successful uploads without a corresponding authenticated session

How to Mitigate CVE-2026-25201

Immediate Actions Required

Upgrade Samsung MagicINFO 9 Server to version 21.1090.1 or later as published by the vendor
Restrict network access to the MagicINFO management interface using firewall rules and allowlists
Review MagicINFO web directories and content stores for unauthorized files written before patching
Rotate credentials, API tokens, and certificates stored on or accessible from the MagicINFO host

Patch Information

Samsung addresses CVE-2026-25201 in MagicINFO 9 Server version 21.1090.1. Patch details and download instructions are available through the Samsung TV Security Updates portal. Apply the update across all MagicINFO 9 Server instances, including disaster recovery and staging environments.

Workarounds

Block external access to the MagicINFO 9 Server management ports and expose them only through a VPN or jump host
Place a web application firewall in front of MagicINFO to filter requests to upload endpoints and inspect file content
Run the MagicINFO service under a least-privilege account to limit the impact of code execution

bash

# Configuration example: restrict MagicINFO management access at the host firewall
# Replace 10.0.0.0/24 with your trusted admin subnet
iptables -A INPUT -p tcp --dport 7001 -s 10.0.0.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 7001 -j DROP