Samsung MagicINFO 9 Server downloadChangedFiles Directory Traversal Authentication Bypass Vulnerability

July 28th, 2025
ZDI-25-655 ZDI-CAN-26520

CVE ID

CVE-2025-54438

CVSS Score

9.8 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors

Samsung

Affected Products

MagicINFO 9 Server

Vulnerability Details

This vulnerability allows remote attackers to bypass authentication on affected installations of Samsung MagicINFO 9 Server. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the downloadChangedFiles function. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to bypass authentication on the system.

Additional Details

Samsung has issued an update to correct this vulnerability. More details can be found at:
https://security.samsungtv.com/securityUpdates

Disclosure Timeline

  • 2025-04-16 - Vulnerability reported to vendor
  • 2025-07-28 - Coordinated public release of advisory
  • 2025-07-28 - Advisory Updated

Credit

Paolo `paupu` Cavaglia of Shielder, Abdel Adim `smaury` Oisfi of Shielder and Nicola `fromVeeko` Davico of Shielder

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