CVE-2026-25111: XWEB Pro RCE Vulnerability

CVE-2026-25111 Overview

An OS command injection vulnerability exists in XWEB Pro version 1.12.1 and prior, enabling an authenticated attacker to achieve remote code execution on the system by injecting malicious input into requests sent to the restore route. This vulnerability affects industrial control system (ICS) software and poses significant risk to operational technology environments.

Critical Impact

Authenticated attackers can achieve full remote code execution on affected XWEB Pro systems through command injection in the restore functionality, potentially compromising entire industrial control environments.

Affected Products

• XWEB Pro version 1.12.1
• XWEB Pro versions prior to 1.12.1

Discovery Timeline

• 2026-02-27 - CVE CVE-2026-25111 published to NVD
• 2026-02-27 - Last updated in NVD database

Technical Details for CVE-2026-25111

Vulnerability Analysis

This vulnerability is classified as CWE-78 (Improper Neutralization of Special Elements used in an OS Command), commonly known as OS command injection. The flaw exists within the restore route handler of the XWEB Pro web interface. When processing restore requests, the application fails to properly sanitize user-supplied input before passing it to system shell commands.

The network-accessible nature of this vulnerability combined with the potential for scope change (affecting resources beyond the vulnerable component) makes this particularly dangerous in ICS environments. While authentication is required, once an attacker has valid credentials, they can leverage this vulnerability to execute arbitrary commands with the privileges of the XWEB Pro application process.

Root Cause

The root cause is insufficient input validation and sanitization in the restore route functionality. User-controlled data is concatenated directly into OS command strings without proper escaping or use of parameterized command execution methods. This allows attackers to break out of the intended command context and inject additional malicious commands.

Attack Vector

The attack vector is network-based, requiring the attacker to have authenticated access to the XWEB Pro web interface. The attacker crafts a malicious HTTP request to the restore endpoint, embedding shell metacharacters and commands within parameters that the application processes. When the server processes this request, the injected commands are executed by the underlying operating system.

Common injection techniques for this type of vulnerability include the use of shell metacharacters such as semicolons (;), pipes (|), backticks, and command substitution syntax ($(command)) to chain additional commands onto legitimate restore operations.

Detection Methods for CVE-2026-25111

Indicators of Compromise

• Unusual HTTP POST requests to the restore route containing shell metacharacters (;, |, &, $(), backticks)
• Unexpected child processes spawned by the XWEB Pro web server process
• Anomalous network connections originating from the XWEB Pro server to external hosts
• Unusual file system modifications or new files created outside normal application directories

Detection Strategies

• Implement web application firewall (WAF) rules to detect and block command injection patterns in requests to the restore endpoint
• Deploy endpoint detection and response (EDR) solutions to monitor for suspicious process execution chains
• Enable detailed access logging for the XWEB Pro application and monitor for anomalous restore requests
• Configure SIEM rules to correlate authentication events with subsequent suspicious command execution

Monitoring Recommendations

• Monitor system call activity on servers running XWEB Pro for unexpected command execution
• Track outbound network connections from ICS/OT network segments for potential data exfiltration
• Implement file integrity monitoring on the XWEB Pro installation directory
• Review authentication logs for credential compromise indicators that could enable exploitation

How to Mitigate CVE-2026-25111

Immediate Actions Required

• Update XWEB Pro to the latest patched version as soon as available from the vendor
• Restrict network access to XWEB Pro administrative interfaces to trusted IP addresses only
• Implement strong authentication controls and audit all user accounts with access to XWEB Pro
• Isolate XWEB Pro systems within a segmented network zone with strict egress filtering

Patch Information

Vendor patch information is available through the Copeland System Software Update portal. Organizations should review the CISA ICS Advisory ICSA-26-057-10 for additional guidance and mitigation recommendations specific to industrial control system environments.

Workarounds

• Disable or restrict access to the restore functionality if not operationally required
• Implement a reverse proxy with strict input validation rules in front of the XWEB Pro application
• Deploy network segmentation to limit lateral movement capabilities if compromise occurs
• Enable additional logging and monitoring to detect exploitation attempts while awaiting patches

# Example: Network access restriction using iptables
# Restrict access to XWEB Pro port to trusted management network only
iptables -A INPUT -p tcp --dport 80 -s 192.168.10.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -s 192.168.10.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP