CriticalPublic exploit

Unauthenticated Command Injection in Serviio Media Server (RCE)

IdentifiersCVE-2025-34101CWE-78· Improper Neutralization of Special…

CVE-2025-34101 is an unauthenticated command injection vulnerability in Serviio Media Server versions 1.4 through 1.8 on Windows. The /rest/action API endpoint, exposed by the console component (default port 23423), contains a flaw in the checkStreamUrl method, which passes the VIDEO parameter unsanitized to cmd.exe. This allows remote attackers to execute arbitrary system commands with the privileges of the web server process. The REST API is exposed by default and lacks authentication or access controls, making exploitation trivial. The vulnerability is also present in the FFMPEGWrapper component, and affects both PRO and standard versions, with confirmed impact on Windows, Mac OS X, and Linux.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows remote, unauthenticated attackers to execute arbitrary commands on the affected system with the privileges of the web server process, potentially leading to full system compromise. On Windows, this may result in SYSTEM-level access. The vulnerability is remotely exploitable, requires no user interaction, and has multiple public exploits and Metasploit modules available, making it highly attractive for attackers.

Mitigation

If you can’t patch tonight, do this now.

Until a patch is available, restrict network access to the Serviio REST API (port 23423) to trusted hosts only. Implement web application firewalls (WAF) with rules to block suspicious or malformed requests to the /rest/action endpoint. Regularly monitor logs for signs of exploitation. Disable or remove the console component if not required.

Remediation

Patch, then assume compromise.

Upgrade Serviio Media Server to a version that addresses CVE-2025-34101. If no patched version is available, immediately restrict access to the REST API endpoint (port 23423) using network-level controls such as firewalls or access control lists. Remove or disable the vulnerable API endpoints if possible. Monitor vendor advisories for official patches or updates.

PUBLIC EXPLOITS

Exploits

1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.

VALID 1 / 1 TOTALView more in app

serviio_checkstreamurl_cmd_exec.rbMaturityWeaponizedFrameworkmetasploitVerified exploit

This repository contains a single Metasploit module targeting an unauthenticated remote command execution vulnerability (CVE-2025-34101) in Serviio Media Server versions 1.4 to 1.8 on Windows. The exploit abuses the 'checkStreamUrl' method of the REST API (default port 23423, endpoint /rest/action), which fails to sanitize the 'VIDEO' parameter, allowing arbitrary command execution via cmd.exe. The module uses Metasploit's command stager to deliver payloads, enabling attackers to gain privileged code execution on the target. The code is mature and weaponized, requiring only network access to the vulnerable service. The repository is structured as a single Ruby file compatible with the Metasploit framework.

Disclosed May 3, 2017rubynetwork

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType

PlexMedia Server Firmwareoperating_system

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

1 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.

1 SOURCESView more in app

No news coverage yet. Advisories and community discussion only.

What this page doesn’t show

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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity1