CVE-2025-54455: Samsung MagicInfo 9 Auth Bypass Flaw

CVE-2025-54455 Overview

CVE-2025-54455 is a critical Use of Hard-coded Credentials vulnerability (CWE-798) affecting Samsung Electronics MagicINFO 9 Server. This authentication bypass vulnerability allows attackers to gain unauthorized access to the digital signage management system by exploiting hard-coded credentials embedded in the application. The vulnerability affects MagicINFO 9 Server versions prior to 21.1080.0.

Critical Impact
Attackers can completely bypass authentication mechanisms to gain full administrative access to affected Samsung MagicINFO 9 Server installations, potentially compromising all managed digital signage displays and associated content management systems.

Affected Products

Samsung MagicINFO 9 Server versions less than 21.1080.0
Enterprise digital signage management deployments using vulnerable MagicINFO 9 Server versions
Organizations utilizing Samsung MagicINFO for centralized display management

Discovery Timeline

July 23, 2025 - CVE-2025-54455 published to NVD
July 28, 2025 - Last updated in NVD database

Technical Details for CVE-2025-54455

Vulnerability Analysis

This vulnerability stems from hard-coded credentials embedded within the Samsung MagicINFO 9 Server application. Hard-coded credentials represent a severe security flaw where authentication secrets are directly embedded in source code or configuration files, making them discoverable through reverse engineering or code analysis. Once attackers identify these credentials, they can authenticate to the server without any knowledge of legitimate user credentials.

The network-accessible nature of this vulnerability means that any attacker with network connectivity to the MagicINFO 9 Server can attempt exploitation. No user interaction is required, and no prior authentication or privileges are necessary to leverage this attack vector. Successful exploitation results in complete compromise of confidentiality, integrity, and availability of the affected system.

Root Cause

The root cause of CVE-2025-54455 is the use of hard-coded credentials (CWE-798) in the Samsung MagicINFO 9 Server authentication mechanism. This design flaw occurs when developers embed static authentication credentials directly into the application rather than implementing secure credential management practices such as dynamic credential generation, secure vaults, or environment-based configuration. These embedded credentials cannot be changed by administrators and are identical across all installations, creating a systemic vulnerability affecting every deployment.

Attack Vector

The attack vector for CVE-2025-54455 is network-based, requiring no authentication, privileges, or user interaction. An attacker can exploit this vulnerability by:

Identifying a network-accessible Samsung MagicINFO 9 Server instance
Extracting or obtaining the hard-coded credentials through reverse engineering or public disclosure
Using the discovered credentials to authenticate to the server
Gaining administrative access to the digital signage management platform

This authentication bypass enables attackers to manipulate digital signage content, access sensitive configuration data, pivot to other network systems, or disrupt display operations across an organization's entire digital signage infrastructure.

Detection Methods for CVE-2025-54455

Indicators of Compromise

Unusual authentication events using system or service accounts on MagicINFO 9 Server
Login attempts from unexpected IP addresses or geographic locations
Administrative actions performed during non-business hours without corresponding legitimate user activity
Multiple concurrent sessions using the same credentials from different sources

Detection Strategies

Monitor authentication logs for logins using default or service account credentials
Implement network segmentation and monitor traffic to MagicINFO 9 Server for anomalous patterns
Deploy intrusion detection rules to identify exploitation attempts targeting the authentication mechanism
Review audit logs for unauthorized configuration changes or content modifications

Monitoring Recommendations

Enable comprehensive logging on MagicINFO 9 Server and forward logs to a centralized SIEM
Configure alerts for authentication events from service accounts or unexpected credential usage
Implement behavioral analytics to detect anomalous administrative activity patterns
Regularly review access logs for signs of unauthorized access or credential abuse

How to Mitigate CVE-2025-54455

Immediate Actions Required

Upgrade Samsung MagicINFO 9 Server to version 21.1080.0 or later immediately
Isolate vulnerable MagicINFO 9 Server instances behind network firewalls until patching is complete
Implement network access controls to restrict connectivity to trusted IP ranges only
Audit recent authentication logs to identify potential prior exploitation

Patch Information

Samsung has released security updates to address this vulnerability. Organizations should upgrade to MagicINFO 9 Server version 21.1080.0 or later to remediate CVE-2025-54455. Detailed patch information and security advisories are available through the Samsung TV Security Updates portal.

Workarounds

Implement strict network segmentation to limit access to MagicINFO 9 Server to authorized management workstations only
Deploy a web application firewall (WAF) or reverse proxy to add an additional authentication layer in front of the MagicINFO 9 Server
Enable multi-factor authentication if supported by your deployment configuration
Monitor all authentication attempts and implement rate limiting to detect brute-force or credential stuffing attacks

bash

# Network isolation example using iptables
# Restrict access to MagicINFO 9 Server to management VLAN only
iptables -A INPUT -p tcp --dport 443 -s 10.0.100.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP