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CVE-2025-55634: Reolink Smart 2K+ Video Doorbell Vulnerability Allows DoS Attacks

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Overview

CVE-2025-55634 is a critical vulnerability that affects the RTMP server settings of the Reolink Smart 2K+ Plug-in Wi-Fi Video Doorbell with Chime. This vulnerability, due to incorrect access control, could potentially allow an unauthorized attacker to cause a Denial of Service (DoS) by initiating a large number of simultaneous ffmpeg-based stream pushes. Given the increasing use of smart devices, this security flaw is significant and requires immediate attention.

Vulnerability Summary

CVE ID: CVE-2025-55634
Severity: High (7.5)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Denial of Service, potential system compromise or data leakage

Affected Products

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Product | Affected Versions

Reolink Smart 2K+ Plug-in Wi-Fi Video Doorbell with Chime | v3.0.0.4662_2503122283

How the Exploit Works

The CVE-2025-55634 vulnerability arises due to incorrect access control in the RTMP server settings of the affected device. An attacker can exploit this vulnerability by initiating a large number of simultaneous ffmpeg-based stream pushes. This could cause an overload of the system resources, leading to a denial of service. In certain circumstances, this could potentially lead to system compromise or data leakage.

Conceptual Example Code

While the exact method of exploiting this vulnerability may differ based on the attacker’s approach, a conceptual example might involve sending a series of commands to initiate numerous ffmpeg-based stream pushes. Note that this is a conceptual example and may not represent a real-world attack scenario.

for i in {1..10000}
do
ffmpeg -i rtsp://target.ip.address:554/stream -f flv rtmp://target.ip.address/live/stream$i &
done

In this example, the attacker initiates 10,000 simultaneous ffmpeg-based stream pushes, which could potentially overwhelm the system, causing a denial of service.

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Disclaimer:

The information and code presented in this article are provided for educational and defensive cybersecurity purposes only. Any conceptual or pseudocode examples are simplified representations intended to raise awareness and promote secure development and system configuration practices.

Do not use this information to attempt unauthorized access or exploit vulnerabilities on systems that you do not own or have explicit permission to test.

Ameeba and its authors do not endorse or condone malicious behavior and are not responsible for misuse of the content. Always follow ethical hacking guidelines, responsible disclosure practices, and local laws.

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