CVE-2025-8153 in UNIVERGE IX
Summary
by MITRE • 09/17/2025
Cross-site Scripting vulnerability in NEC Corporation UNIVERGE IX from Ver.9.5 to Ver.10.7, from Ver.10.8.21 to Ver.10.8.36, from Ver.10.9.11 to Ver.10.9.24, from Ver.10.10.21 to Ver.10.10.31, Ver.10.11.6 and UNIVERGE IX-R/IX-V Ver1.3.16, Ver1.3.21 allows a attacker to inject an arbitrary scripts may be executed on the user's browser.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 09/18/2025
The CVE-2025-8153 vulnerability represents a critical cross-site scripting flaw affecting NEC Corporation's UNIVERGE IX communication platform across multiple version ranges including 9.5 through 10.7, 10.8.21 through 10.8.36, 10.9.11 through 10.9.24, 10.10.21 through 10.10.31, and specific releases of UNIVERGE IX-R/IX-V series. This vulnerability resides in the platform's web interface handling of user input, creating an avenue for malicious actors to inject arbitrary scripts that execute within the context of authenticated user sessions. The affected systems process user-supplied data without proper sanitization or validation, allowing attackers to craft malicious payloads that can persist in the application's user interface elements or data storage mechanisms.
The technical exploitation of this vulnerability follows standard XSS attack patterns where an attacker crafts malicious input containing script code that gets rendered in the web interface without adequate output encoding or validation. This flaw maps directly to CWE-79 which defines Cross-Site Scripting as a weakness where applications fail to properly validate or encode user-controllable data before incorporating it into dynamically generated web content. The vulnerability's impact extends beyond simple script execution as it can be leveraged to steal session cookies, perform unauthorized actions on behalf of users, or redirect victims to malicious domains. Given that UNIVERGE IX serves as a communication platform for enterprise environments, successful exploitation could lead to complete compromise of user sessions and potential lateral movement within network infrastructures.
The operational implications of CVE-2025-8153 are particularly severe for organizations relying on NEC's communication infrastructure, as the vulnerability enables attackers to manipulate the platform's user interface and potentially access sensitive communication data. Attackers could exploit this vulnerability to inject scripts that capture user credentials, modify communication parameters, or establish persistent backdoors within the communication ecosystem. The attack surface is broad given that the vulnerability affects multiple version ranges, suggesting a widespread exposure across various deployment scenarios including enterprise communication networks, call centers, and unified communication environments. This vulnerability directly aligns with ATT&CK technique T1566.001 for credential harvesting through phishing and social engineering, as well as T1059.007 for script injection techniques that could be used to establish persistent access.
Organizations should immediately implement multiple layers of defense including input validation, output encoding, and proper content security policy enforcement to mitigate this vulnerability. The recommended mitigation strategy includes applying NEC's official security patches as soon as they become available, implementing web application firewalls to detect and block malicious script injections, and conducting thorough security assessments of all user interface components. Network segmentation and monitoring should be enhanced to detect anomalous script execution patterns, while user education programs should emphasize the importance of not clicking on suspicious links or entering credentials on untrusted systems. The vulnerability also underscores the critical need for regular security updates and vulnerability assessments in enterprise communication platforms, particularly those handling sensitive business communications and user data.