Description

The OpenRGB network protocol allows to write attacker controlled strings into arbitrary file system paths (extension of CVE-2026-59682). This allows either a full system compromise from local or remote (if the daemon is running as root) or a full account takeover (if the daemon is running in user context).

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "9.8",
  "pubDate": "2026-08-26T10:16:41.037Z",
  "pubdate": "2026-08-26T10:16:41.037Z",
  "executiveSummary": "The OpenRGB network protocol contains a critical security flaw involving improper input validation that permits arbitrary file write operations. This vulnerability is identified as an extension of CVE-2026-59682, exposing the system to unauthorized data injection and potential remote code execution.\nThe vulnerability type is an Arbitrary File Write, which allows an attacker to control the contents and destination of files on the host filesystem. Depending on the privilege level of the OpenRGB daemon, the impact ranges from full user account takeover to total system compromise.\nThe attack is viable both locally and remotely if the OpenRGB network server is exposed, providing an unauthenticated attacker the ability to overwrite sensitive system binaries, configuration files, or user-specific startup scripts. The risk implications are severe, as the lack of adequate path sanitization or access control within the protocol's file handling logic allows for complete system integrity loss. Exploitation requires only network connectivity to the vulnerable daemon, making it a high-priority concern for any environment deploying OpenRGB with network listening enabled.",
  "technicalDetails": "The root cause of this vulnerability lies in the insufficient sanitization of file path inputs provided through the OpenRGB network protocol. The daemon fails to implement a secure chroot or path-traversal prevention mechanism, effectively allowing an attacker to utilize path manipulation techniques (such as directory traversal sequences) to specify arbitrary write locations on the host filesystem.\nThe attack flow initiates with a connection to the OpenRGB network service. An attacker crafts a malicious request containing a path-traversal string, such as '../../../etc/cron.d/malicious_task', coupled with an attacker-controlled payload. Because the protocol handler does not validate that the requested path resides within a designated secure directory, it proceeds to open the specified file descriptor with write permissions.\nThe impact is intrinsically tied to the privileges of the service user. When the OpenRGB daemon is executed with root or administrative privileges, an attacker can overwrite critical system files like /etc/shadow, /etc/passwd, or persistent init scripts, leading to immediate full system compromise. If the daemon runs under a standard user account, the attacker can still achieve account takeover by modifying files such as ~/.bashrc, ~/.ssh/authorized_keys, or other application-specific configuration files that reside within the user's home directory. This allows the attacker to gain code execution upon the next user login or process initialization.\nThe vulnerable component is the network protocol handler within the OpenRGB daemon, which exposes file system operations to external requests. Since the protocol does not enforce mandatory authentication for these specific command sets, the attack surface is significantly expanded. This enables remote exploitation against any exposed instance, circumventing security controls that would otherwise require local interactive access. The lack of integrity checks on the incoming data stream means that binary or script-based payloads are written verbatim, facilitating the injection of malicious code or configuration directives. The flaw essentially grants an attacker a primitive for file creation and modification that bypasses traditional application-level sandboxing, posing a persistent threat to system security and data integrity."
}