CVE-2025-56578: RTSPtoWeb RCE Vulnerability

CVE-2025-56578 Overview

CVE-2025-56578 is a missing authentication vulnerability [CWE-287] in RTSPtoWeb version 2.4.3. RTSPtoWeb is an open-source application that converts Real Time Streaming Protocol (RTSP) video streams into web-friendly formats for browser playback. The affected release ships without authentication controls on its management interface. A remote attacker with network access can retrieve sensitive stream configuration data and, according to the reporter, achieve arbitrary code execution through the exposed interface.

Critical Impact
Unauthenticated network access to RTSPtoWeb 2.4.3 exposes stream configuration data and enables arbitrary code execution paths through the management interface.

Affected Products

RTSPtoWeb v2.4.3

Discovery Timeline

2025-09-10 - CVE-2025-56578 published to the National Vulnerability Database (NVD)
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-56578

Vulnerability Analysis

RTSPtoWeb v2.4.3 exposes its HTTP management interface without enforcing authentication. Any client that can reach the service over the network can enumerate streams, read configuration data, and interact with administrative endpoints. The reporter also documents an arbitrary code execution path stemming from the same lack of access control.

The vulnerability is classified under [CWE-287: Improper Authentication]. The interface treats unauthenticated requests as trusted operator actions. This design flaw eliminates the primary control that would normally separate anonymous network traffic from privileged stream and configuration management.

The EPSS probability for exploitation is 0.329%, indicating limited near-term exploitation likelihood but not a limit on impact if the service is exposed to hostile networks.

Root Cause

The root cause is the absence of an authentication mechanism on the RTSPtoWeb administrative HTTP endpoints in the 2.4.3 release. There is no session, token, or credential requirement enforced before privileged operations are executed. Deployments that place the service on an internet-reachable interface inherit this exposure directly.

Attack Vector

Exploitation requires network reachability to the RTSPtoWeb service. An attacker sends HTTP requests directly to the management endpoints to enumerate stream definitions, extract RTSP credentials embedded in stream URLs, and interact with functions that lead to code execution. User interaction is required in the CVSS vector, which suggests an operator-triggered path (for example, an administrator loading attacker-influenced content) is part of the documented chain.

No verified exploit code is available in a public exploit database. Technical details are described in the GitHub Vulnerability Report.

Detection Methods for CVE-2025-56578

Indicators of Compromise

Unexpected HTTP requests to RTSPtoWeb administrative paths (for example /stream/*, /streams, /channels) from external or unauthorized internal sources.
New or modified stream definitions in the RTSPtoWeb configuration that were not created by an administrator.
Outbound RTSP connections from the RTSPtoWeb host to attacker-controlled URLs.
Process spawns from the RTSPtoWeb binary that deviate from the baseline stream-handling workflow.

Detection Strategies

Baseline the expected clients and source IP ranges for the RTSPtoWeb HTTP interface and alert on deviations.
Inspect web server and reverse-proxy logs for requests to management endpoints that lack any authentication header or session cookie.
Correlate configuration changes in RTSPtoWeb with authenticated administrative sessions from your identity provider.

Monitoring Recommendations

Forward RTSPtoWeb access logs and host process telemetry to a centralized analytics platform for retention and query.
Monitor for the RTSPtoWeb port (default 8083) being exposed on internet-facing interfaces via external attack surface scanning.
Alert on child processes launched by the RTSPtoWeb service that are not part of its documented runtime behavior.

How to Mitigate CVE-2025-56578

Immediate Actions Required

Remove RTSPtoWeb 2.4.3 from any internet-reachable interface and restrict access to trusted management networks only.
Place the service behind a reverse proxy that enforces authentication before requests reach the RTSPtoWeb HTTP listener.
Rotate any RTSP credentials that were configured in RTSPtoWeb 2.4.3, since they may have been exposed to unauthenticated readers.
Audit the RTSPtoWeb configuration for stream entries that were not created by authorized administrators.

Patch Information

No vendor patch is referenced in the CVE record at the time of publication. Monitor the RTSPtoWeb project repository for a fixed release that introduces built-in authentication. Until a fixed version is available, treat every 2.4.3 deployment as unauthenticated by design and compensate at the network and proxy layer.

Workarounds

Enforce HTTP Basic or token authentication using an upstream reverse proxy such as nginx, Caddy, or Traefik in front of RTSPtoWeb.
Apply host-based firewall rules (iptables, nftables, or cloud security groups) that restrict inbound access to the RTSPtoWeb port to a defined allowlist.
Deploy the service inside a private network segment or VPN-only zone and disable any port forwarding from external interfaces.

bash

# Example nginx reverse-proxy snippet enforcing Basic auth in front of RTSPtoWeb
server {
    listen 443 ssl;
    server_name rtsptoweb.internal.example;

    location / {
        auth_basic "RTSPtoWeb Restricted";
        auth_basic_user_file /etc/nginx/.htpasswd;

        proxy_pass http://127.0.0.1:8083;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
    }
}