CVE-2026-25196 Overview
An OS command injection vulnerability exists in Copeland XWEB Pro version 1.12.1 and prior, enabling an authenticated attacker to achieve remote code execution on the system. The vulnerability is triggered by injecting malicious input into the Wi-Fi SSID and/or password fields, which can lead to remote code execution when the configuration is processed.
Critical Impact
Authenticated attackers can execute arbitrary OS commands on affected Copeland XWEB Pro devices, potentially leading to full system compromise of industrial control system (ICS) equipment.
Affected Products
- Copeland XWEB 300D Pro Firmware (version 1.12.1 and prior)
- Copeland XWEB 500D Pro Firmware (version 1.12.1 and prior)
- Copeland XWEB 500B Pro Firmware (version 1.12.1 and prior)
Discovery Timeline
- 2026-02-27 - CVE-2026-25196 published to NVD
- 2026-02-27 - Last updated in NVD database
Technical Details for CVE-2026-25196
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 in how the XWEB Pro firmware processes user-supplied input in the Wi-Fi configuration interface.
When an authenticated user submits Wi-Fi network configuration data (SSID and password), the application fails to properly sanitize these inputs before incorporating them into system-level commands. This allows an attacker to embed shell metacharacters and arbitrary commands within the configuration fields.
The vulnerability is exploitable over the network and requires low attack complexity, though authentication is required. Successful exploitation enables attackers to execute commands with the privileges of the web application, potentially gaining full control over the affected industrial control system device.
Root Cause
The root cause is insufficient input validation and sanitization in the Wi-Fi configuration processing routine. The firmware directly passes user-controlled input (Wi-Fi SSID and password values) to underlying system commands without properly escaping or validating special characters. Shell metacharacters such as semicolons, backticks, or pipe characters are not filtered, allowing command injection.
Attack Vector
The attack requires network access to the XWEB Pro web interface and valid authentication credentials. An attacker would:
- Authenticate to the XWEB Pro web management interface
- Navigate to the Wi-Fi configuration section
- Inject malicious payloads containing OS commands into the SSID or password fields
- Submit the configuration, triggering command execution when the input is processed
The vulnerability allows command injection through Wi-Fi configuration fields. When the device processes configuration containing shell metacharacters (e.g., ; command or $(command)), the injected commands are executed in the context of the web application. For detailed technical information, refer to the CISA ICS Advisory ICSA-26-057-10.
Detection Methods for CVE-2026-25196
Indicators of Compromise
- Unusual characters or shell metacharacters (;, |, $(), backticks) appearing in Wi-Fi configuration logs
- Unexpected process spawning from the web application process
- Network connections initiated from the XWEB Pro device to external or unusual destinations
- Suspicious command execution patterns in system logs
Detection Strategies
- Monitor HTTP POST requests to Wi-Fi configuration endpoints for shell metacharacters and command injection patterns
- Implement network-based intrusion detection rules to identify command injection attempts in configuration traffic
- Deploy endpoint detection to monitor for anomalous process creation on XWEB Pro devices
- Review authentication logs for unauthorized access attempts followed by configuration changes
Monitoring Recommendations
- Enable detailed logging on XWEB Pro devices and forward logs to a centralized SIEM for analysis
- Establish baseline behavior for XWEB Pro devices to detect anomalous network activity
- Monitor for firmware version changes or unauthorized configuration modifications
- Implement network segmentation and monitor traffic crossing ICS network boundaries
How to Mitigate CVE-2026-25196
Immediate Actions Required
- Update affected Copeland XWEB Pro firmware to the latest patched version available from Copeland's Software Update Page
- Restrict network access to XWEB Pro management interfaces using firewall rules and network segmentation
- Audit and strengthen authentication credentials for all XWEB Pro devices
- Review logs for any evidence of prior exploitation attempts
Patch Information
Copeland has released security updates to address this vulnerability. Administrators should obtain the latest firmware from the Copeland Software Update Page. Additional technical details and guidance are available in the CISA ICS Advisory ICSA-26-057-10 and the GitHub CSAF Data File.
Workarounds
- Isolate XWEB Pro devices on a dedicated network segment with strict access controls
- Disable Wi-Fi configuration functionality if not required for operations
- Implement application-layer firewall rules to filter potentially malicious input patterns
- Use VPN or other secure access methods to limit exposure of management interfaces
# Example network segmentation using iptables
# Restrict access to XWEB Pro management interface to trusted networks only
iptables -A INPUT -p tcp --dport 80 -s 192.168.1.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -s 192.168.1.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -j DROP
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
