CVE-2025-43877 in WRC-1167GHBK2-S
Summary
by MITRE • 06/24/2025
WRC-1167GHBK2-S contains a stored cross-site scripting vulnerability in WebGUI. If exploited, an arbitrary script may be executed on the web browser of the user who accessed WebGUI of the product.
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Analysis
by VulDB Data Team • 06/27/2025
The vulnerability identified as CVE-2025-43877 affects the WRC-1167GHBK2-S device and represents a critical stored cross-site scripting flaw within its WebGUI interface. This vulnerability resides in the web-based management system that administrators and users employ to configure and monitor the device. The stored nature of the XSS vulnerability means that malicious input is first saved by the application and then subsequently executed when other users access the affected web interface, creating a persistent threat vector that can compromise multiple users over time. The vulnerability specifically impacts the device's web graphical user interface which serves as the primary management portal for configuring network parameters, monitoring system status, and managing device settings.
The technical flaw stems from inadequate input validation and output encoding within the WebGUI components of the WRC-1167GHBK2-S device. When user-supplied data is processed and stored without proper sanitization, malicious scripts can be injected into the application's data storage mechanisms. These scripts are then served to unsuspecting users who access the affected web interface, causing their browsers to execute the malicious code within the context of the vulnerable application. This type of vulnerability falls under CWE-79 which specifically addresses cross-site scripting flaws in web applications, and aligns with ATT&CK technique T1566.001 for initial access through spearphishing attachments or links. The vulnerability enables attackers to potentially steal session cookies, redirect users to malicious sites, or execute arbitrary commands on behalf of the victim.
The operational impact of this vulnerability extends beyond simple script execution as it can lead to complete compromise of the device management interface. An attacker who successfully exploits this vulnerability could gain unauthorized access to sensitive configuration data, modify device settings, or establish persistent access points within the network environment. The stored nature of the vulnerability means that even after the initial attack, the malicious payload continues to affect users who access the WebGUI, making it particularly dangerous for environments where multiple administrators or users regularly access the device management interface. This vulnerability could also facilitate lateral movement within networks if the device serves as a gateway or critical infrastructure component, as attackers might use the compromised WebGUI as a foothold to access other systems.
Mitigation strategies for CVE-2025-43877 should prioritize immediate patch deployment from the vendor if available, as this represents a critical security flaw that can be exploited by remote attackers without authentication. Network segmentation and access controls should be implemented to limit access to the device's WebGUI interface to only authorized personnel with legitimate business need. Regular monitoring of web interface logs for suspicious input patterns and unusual access attempts should be established as part of security operations. Input validation should be strengthened at all entry points to the WebGUI, with proper output encoding implemented to prevent script execution in user-facing content. Organizations should also consider implementing web application firewalls to detect and block malicious payloads attempting to exploit XSS vulnerabilities. Additionally, regular security assessments and penetration testing should be conducted to identify similar vulnerabilities in other network devices and applications within the environment. The vulnerability demonstrates the critical importance of proper input sanitization and output encoding in web applications, and serves as a reminder that even seemingly simple web interfaces can contain complex security flaws that require comprehensive security controls to prevent exploitation.