CVE-2025-34101 CRITICAL

CVE-2025-34101: Serviio Media Server Unauthenticated Command Injection via checkStreamUrl VIDEO Parameter

Vendor Serviio
Product Media Server
Weakness CWE-78
Published July 10, 2025
Last update May 14, 2026

CVSS base score

9.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

An unauthenticated command injection vulnerability exists in Serviio Media Server versions 1.4 through 1.8 on Windows, in the /rest/action API endpoint exposed by the console component (default port 23423). The checkStreamUrl method accepts a VIDEO parameter that is passed unsanitized to a call to cmd.exe, enabling arbitrary command execution under the privileges of the web server. No authentication is required to exploit this issue, as the REST API is exposed by default and lacks access controls.

Key dates

02Disclosure timeline

July 10, 2025 CVE published
May 14, 2026 Record updated