CVE-2024-22076: MyQ Print Server RCE Vulnerability

CVE-2024-22076 Overview

CVE-2024-22076 is a critical remote code execution vulnerability affecting MyQ Print Server versions prior to 8.2 patch 43. The vulnerability allows remote authenticated administrators to execute arbitrary code on the server by leveraging PHP scripts accessible through the administrative interface. This flaw represents a significant security risk for organizations using MyQ Print Server in their print management infrastructure.

Critical Impact

Authenticated administrators can achieve arbitrary code execution on the underlying server, potentially leading to complete system compromise, data exfiltration, and lateral movement within the network.

Affected Products

• MyQ Print Server versions before 8.2
• MyQ Print Server 8.2 beta1, RC1, RC2, RC3
• MyQ Print Server 8.2 patch 1 through patch 42

Discovery Timeline

• January 23, 2024 - CVE-2024-22076 published to NVD
• June 16, 2025 - Last updated in NVD database

Technical Details for CVE-2024-22076

Vulnerability Analysis

This vulnerability exists within the MyQ Print Server's administrative web interface, which fails to properly restrict or sanitize access to PHP scripts. Authenticated administrators can reach and execute arbitrary PHP code through the administrative interface, bypassing intended security controls. The vulnerability is particularly concerning because print servers often operate with elevated privileges and have network access to multiple endpoints across an organization.

The attack requires no user interaction and can be executed remotely over the network. While authentication is required at the application level, the vulnerability is compounded by the potential use of default administrative credentials, as highlighted in Access42's analysis. This combination significantly lowers the barrier to exploitation.

Root Cause

The root cause of CVE-2024-22076 stems from inadequate access controls within the MyQ Print Server administrative interface. The application fails to properly restrict which PHP scripts can be accessed and executed by authenticated administrators. This lack of proper input validation and access control allows attackers to leverage the administrative interface to reach PHP scripts that should not be directly accessible, resulting in arbitrary code execution on the server.

Attack Vector

The attack is network-based and targets the administrative web interface of MyQ Print Server. An attacker must first authenticate to the administrative interface, potentially using default credentials if they have not been changed. Once authenticated, the attacker can navigate to or directly request PHP scripts through the administrative interface that allow for arbitrary code execution on the underlying server.

The exploitation chain typically involves:

1. Network reconnaissance to identify MyQ Print Server instances
2. Authentication to the administrative interface (potentially via default credentials)
3. Accessing PHP scripts through the administrative interface
4. Executing arbitrary code with the privileges of the web server process

Detection Methods for CVE-2024-22076

Indicators of Compromise

• Unusual HTTP requests to the MyQ Print Server administrative interface targeting PHP endpoints
• Unexpected process spawning from the web server process (e.g., cmd.exe, powershell.exe, /bin/sh, /bin/bash)
• Authentication attempts using default administrator credentials
• New or modified files in the MyQ Print Server installation directories

Detection Strategies

• Monitor web server access logs for suspicious requests to administrative PHP endpoints with unusual parameters
• Implement network intrusion detection rules to identify exploitation attempts targeting the administrative interface
• Deploy endpoint detection and response (EDR) solutions to detect anomalous process execution chains originating from the print server service
• Review authentication logs for brute-force attempts or successful logins using default credentials

Monitoring Recommendations

• Enable detailed logging for the MyQ Print Server administrative interface and web server components
• Configure alerts for administrative login attempts from unexpected IP addresses or outside business hours
• Monitor for outbound connections from the print server to unusual destinations that may indicate command and control activity
• Implement file integrity monitoring on the MyQ Print Server installation directory

How to Mitigate CVE-2024-22076

Immediate Actions Required

• Upgrade MyQ Print Server to version 8.2 patch 43 or later immediately
• Change all default administrative credentials to strong, unique passwords
• Restrict network access to the administrative interface using firewall rules or network segmentation
• Review access logs for signs of prior exploitation

Patch Information

MyQ Solution has released patch 43 for MyQ Print Server 8.2 that addresses this vulnerability. Organizations should review the MyQ Solution Technical Changelog for complete patch details and upgrade instructions. For comprehensive documentation, refer to the MyQ Print Server 8.2 Documentation.

Workarounds

• Restrict administrative interface access to trusted IP addresses only via firewall rules
• Implement multi-factor authentication for administrative access if supported
• Place the MyQ Print Server behind a VPN or on a segmented network with limited access
• Disable or remove unnecessary PHP scripts and administrative features if possible

# Example: Restrict administrative interface access via firewall (iptables)
# Allow access only from trusted management network
iptables -A INPUT -p tcp --dport 8090 -s 10.0.0.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 8090 -j DROP