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CVE-2026-25202 – MagicINFO 9 Server Hardcoded Database Credentials Vulnerability

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CVE-2026-25202 Hardcoded Credentials Database Compromise

Overview

CVE-2026-25202 is a critical vulnerability in Samsung MagicINFO 9 Server in which database account and password are hardcoded into the application. This allows an unauthenticated attacker who discovers these credentials to log directly into the backend database and manipulate it without going through normal application authentication. The flaw affects versions older than 21.1090.1 and is part of a broader disclosure of multiple critical vulnerabilities in MagicINFO9 that can lead to server takeover, remote code execution, and authentication bypass.

Technical Specifications

Attribute Details
CVE ID CVE-2026-25202
Vulnerability Type Use of Hard-coded Credentials (CWE-798)
CVSS Score 9.8 (Critical)
Attack Vector Network
Authentication None
Complexity Low
User Interaction Not Required
Affected Versions MagicINFO 9 Server < 21.1090.1

Affected Products

  • Samsung MagicINFO 9 Server versions prior to 21.1090.1
  • Digital signage and display management systems
  • Internet-exposed signage infrastructure
  • Status: Active / Patch available (version 21.1090.1+)

Technical Details

Vulnerability Characteristics

  • Type: Use of hard-coded credentials embedded in code or configuration
  • Persistence: Credentials cannot be changed without patching, making vulnerability persistent until update
  • Access Level: Allows direct database access, bypassing application authentication
  • Scope: Remote, unauthenticated exploitation over network

Security Impact

  • Confidentiality: High — unauthorized access to sensitive configuration and content data
  • Integrity: High — modification or deletion of database records and signage content
  • Availability: High — potential disruption of signage service through data corruption

Attack Surface

  • Network-accessible MagicINFO9 Server instances
  • Exposed signage management infrastructure
  • Publicly facing digital display systems

Attack Scenario

  1. Attacker identifies a network-accessible MagicINFO9 Server through reconnaissance
  2. Attacker extracts or discovers the hardcoded database credentials through reverse engineering, documentation leaks, or public disclosure
  3. Attacker uses credentials to authenticate directly to the backend database, bypassing application-level controls
  4. Attacker gains unauthorized access to read sensitive configuration and content data
  5. Attacker injects malicious content into database or deletes key signage records
  6. Server is compromised and signage content can be manipulated or service disrupted
  7. If chained with other MagicINFO vulnerabilities (path traversal, RCE), complete server compromise is possible

Impact Assessment

  • Unauthorized access to system databases
  • Theft of sensitive configuration and signage content
  • Exposure of customer data and display settings
  • Access to authentication credentials and API keys
  • Direct modification of database records
  • Manipulation of signage content and display messages
  • Injection of malicious content into displays
  • Corruption of database state and data consistency
  • Service disruption through database corruption
  • Deletion of critical signage records and configurations
  • Potential denial of service of signage systems
  • Business disruption from defaced or offline displays

Mitigation Strategies

Immediate Actions

  • Patch and update: Upgrade MagicINFO 9 Server to version 21.1090.1 or later immediately
  • Audit database access logs for unauthorized authentication attempts
  • Review database for suspicious modifications or injected content
  • Isolate affected systems from untrusted networks

Short-term Measures

  • Restrict access to signage servers from untrusted networks using firewall rules
  • Implement network segmentation to isolate signage infrastructure
  • Use VPN or bastion host access for administrative functions
  • Apply compensating controls before patching (if upgrade is delayed)
  • Monitor database connections and queries for anomalies

Monitoring & Detection

  • Watch for unauthorized database access attempts using hardcoded credentials
  • Monitor for anomalous database queries and modifications
  • Track signage content changes for unauthorized modifications
  • Alert on failed and successful database authentication events
  • Review access logs for suspicious patterns

Long-term Solutions

  • Establish patch management process for Samsung products
  • Implement zero-trust architecture for signage infrastructure
  • Use dedicated network segmentation for display management systems
  • Deploy database activity monitoring (DAM) solutions
  • Enforce network access controls and geo-fencing for administrative access
  • Maintain inventory of all MagicINFO instances and versions
  • Conduct regular security assessments of signage infrastructure
  • Consider alternative signage solutions with better security practices

Resources and References

Incident Reports

Last Updated: February 5, 2026